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Grand Blue Dreaming Season 3 takes Iori Kitahara and the members of the Peek a Boo diving club into their first overseas adventure. After the chaotic university life and diving experiences of the earlier seasons, the story moves toward the tropical oceans of Palau, bringing new locations, new people, diving adventures, romantic confusion, and the same ridiculous comedy that defines Grand Blue.

Season 3 keeps the series’ unusual balance between diving, friendship, romance, university life, and completely unpredictable comedy. While Iori and his friends continue to call themselves a diving club, their daily lives remain filled with drinking parties, misunderstandings, competitions, and situations that have almost nothing to do with peaceful diving.

Introduction to Grand Blue Dreaming Season 3

Grand Blue Dreaming has always been a series that refuses to behave like a normal diving anime. Beneath its beautiful ocean scenery is a university comedy where friendships are constantly tested by alcohol, embarrassing situations, romantic misunderstandings, and the unbelievable behavior of the Peek a Boo diving club.

Season 3 continues this formula while expanding the world beyond Japan. The official story introduces a major new setting: Palau. A branch of the Dolphin diving shop has been established there, but it needs additional help. Nanaka Kotegawa asks Iori to assist with the new location.

The problem is that Iori is not traveling alone. Kohei Imamura becomes involved as well, despite having concerns about leaving Japan because he does not want to miss anime broadcasts.

This simple setup becomes the beginning of another chaotic Grand Blue adventure.

The Story Moves to Palau

One of the biggest changes in Season 3 is the location. Instead of keeping the entire story around Izu and the university, the anime sends the characters to Palau.

Palau is an especially fitting location for Grand Blue because the series has always used the ocean as more than just background scenery. Diving provides opportunities for adventure, beautiful underwater environments, and new challenges for the characters.

At the same time, moving the characters overseas creates another source of comedy. Iori and his friends are not exactly the most responsible group of travelers, so an international trip quickly becomes another opportunity for chaos.

Iori Kitahara

Iori remains the central character of Grand Blue. His university life has never gone according to the peaceful plan he originally imagined.

After arriving at college, Iori became involved with the Peek a Boo diving club and gradually became part of its bizarre culture. Although he genuinely participates in diving, he is also constantly dragged into ridiculous situations by his friends.

Season 3 places Iori in another unfamiliar environment. Palau gives him an opportunity to experience international diving, but his personality guarantees that the trip will be anything except relaxing.

Iori’s relationship with Chisa also remains an important part of his personal story. Their interactions frequently move between normal university friendship, awkward romantic tension, and classic Grand Blue misunderstandings.

Kohei Imamura

Kohei is one of the most important sources of comedy in the series. He is Iori’s close friend and a dedicated anime fan whose priorities can sometimes be completely different from everyone else’s.

The decision to travel overseas creates an immediate problem for Kohei. The possibility of missing anime episodes is enough to make him question whether the trip is worth taking.

His relationship with Iori is one of the strongest comedic partnerships in Grand Blue. Both characters frequently make questionable decisions, and together they often transform ordinary situations into disasters.

Chisa Kotegawa

Chisa is one of the calmer members of the group and is strongly connected to diving. Her personality contrasts with the chaos surrounding Iori and the rest of Peek a Boo.

Because Chisa genuinely enjoys diving, she represents an important part of what Grand Blue is actually about beneath the comedy. The ocean, underwater exploration, and diving culture remain central to her character.

Her relationship with Iori also provides one of the series’ more understated romantic elements. Their relationship is rarely straightforward, which makes their small moments together more meaningful.

Nanaka Kotegawa

Nanaka plays an important role in the Palau storyline because the Dolphin diving shop’s overseas branch needs assistance.

Her connection to the diving world gives her a natural reason to become involved in the international storyline. She also adds another layer of comedy because the characters around her are rarely as responsible as they should be.

Azusa Hamaoka

Azusa continues to be one of the older and more experienced members of the group. Her confidence and relaxed attitude make her a natural fit for the chaotic atmosphere of Peek a Boo.

She is also one of the characters who can shift between comedy and more mature conversations. This gives the group a wider range of personalities rather than making every character behave the same way.

Aina Yoshiwara

Aina continues to bring another romantic perspective to the group. Her feelings and reactions often become part of the comedy, particularly when relationships and misunderstandings begin to overlap.

Season 3 continues to use these relationships as a source of humor without abandoning the friendship that connects the main cast.

The Peek a Boo Diving Club

Peek a Boo is technically a diving club, but anyone familiar with Grand Blue knows that diving is only one part of its identity.

The club’s members are famous for turning ordinary university life into chaotic celebrations. Their friendship is genuine, but their behavior can be incredibly irresponsible.

Iori and Kohei become deeply involved in this culture, and Season 3 continues to use the club as the foundation for many of its funniest situations.

Diving in Grand Blue

Despite the comedy, diving remains one of the most beautiful aspects of Grand Blue. The series frequently contrasts the ridiculous behavior of its characters with peaceful underwater scenery.

This contrast is especially effective in Season 3 because Palau provides an entirely new ocean environment. The tropical setting gives the anime an opportunity to show clear water, marine environments, boats, beaches, and diving locations.

The result is a visual balance between extreme comedy and relaxing underwater imagery.

The Beauty of Palau

Palau gives Season 3 a fresh visual identity. Tropical skies, bright water, beaches, palm trees, and ocean landscapes create a major contrast with the familiar locations from previous seasons.

The official Season 3 promotional visual places the characters against a bright tropical environment, immediately communicating that the story has entered a new chapter.

Comedy Remains the Heart

Grand Blue would not be Grand Blue without its comedy.

Season 3 continues the franchise’s unusual style of humor, where characters can move from a beautiful diving scene into complete chaos within seconds.

Iori’s reactions are particularly important because he often becomes the audience’s perspective. When something ridiculous happens, his confusion and frustration help make the situation even funnier.

University Life

Even with the Palau setting, Grand Blue remains connected to university life. The characters are still students, and their relationships continue to develop through everyday campus experiences.

The series uses university life as a foundation for friendship, romance, parties, clubs, competitions, and misunderstandings.

Friendship Between Iori and Kohei

Iori and Kohei may have completely different interests, but their friendship is one of the strongest relationships in the series.

Both characters are frequently dragged into situations they did not expect. Sometimes they are responsible for creating the problem themselves, and sometimes they simply make an existing situation much worse.

Their friendship works because the two characters understand each other’s strange personalities.

Iori and Chisa

Iori and Chisa provide a different kind of relationship from Iori and Kohei. Their interactions are generally quieter and more connected to diving and personal feelings.

Chisa’s straightforward personality contrasts with Iori’s tendency to become involved in ridiculous situations. Their relationship therefore creates a natural balance between comedy and romance.

Romance in Season 3

Romance has never been the only focus of Grand Blue, but it remains an important secondary element.

The characters are young adults dealing with friendships, attraction, jealousy, embarrassment, and misunderstandings. Season 3 continues to use those elements without turning the series into a traditional romance anime.

Instead, romantic moments often become part of the comedy.

The New Characters

The Palau storyline introduces new faces and expands the world outside the familiar university group. These characters provide fresh interactions for Iori, Chisa, Kohei, and the rest of the cast.

New personalities also help prevent the international storyline from feeling like a simple change of scenery.

The Grand Blue Atmosphere

One of the reasons Grand Blue remains distinctive is its ability to switch moods extremely quickly.

A scene can begin with a beautiful ocean view, move into a serious conversation about diving, and suddenly become a ridiculous comedy sequence.

Season 3 continues this rhythm while taking advantage of the tropical Palau setting.

Episode 1 and the New Adventure

The beginning of Season 3 establishes the new direction of the story. The characters are presented with the opportunity to help the Dolphin diving shop’s Palau branch, creating the reason for their first major overseas adventure.

Kohei’s hesitation about traveling overseas because of anime broadcasts immediately demonstrates that the characters have not suddenly become responsible adults.

The Mid-Season Comedy

As Season 3 progresses, the story returns to the familiar combination of romance, university life, diving, and absurd comedy.

Episodes include situations involving social events, relationships, personal problems, and the future of the older members of the diving club.

One of the later storylines begins to consider what happens when senior members start thinking about their future after university. This gives Iori another reason to think about the direction of his own university life.

Iori’s Future

University life does not last forever, and Season 3 begins to explore that idea more directly.

As older members begin thinking about graduation and changing responsibilities, Iori has to consider what the Peek a Boo club will look like in the future.

This creates a more mature theme underneath the comedy: friendships can change as people move into different stages of life.

The Comedy of Adult Friendship

Grand Blue’s characters are technically university students, but their friendship often resembles the kind of close adult friendship where people are comfortable embarrassing themselves in front of each other.

The series uses this dynamic to create comedy while also showing genuine loyalty between the characters.

Visual Direction

Season 3 continues the bright visual style associated with Grand Blue while expanding the environmental variety through the Palau setting.

Tropical landscapes provide strong colors and open spaces, while underwater scenes create a calmer visual rhythm compared with the exaggerated comedy scenes.

Animation Production

Season 3 is produced by Zero-G × Saber Works. Shinji Takamatsu serves as director, sound director, and scriptwriter.

Character design and chief animation direction are handled by Hideoki Kusama, with Yoichi Ueda serving as chief animation director. Minoru Akiba is credited as art director, while Aiko Matsuyama handles color design.

The production team also includes Naoyuki Kato for photography direction and Shun Tokuda for editing.

Music by Yukari Hashimoto

The music for Season 3 is composed by Yukari Hashimoto. The soundtrack helps support both sides of the series: the energetic comedy and the more peaceful atmosphere of the diving sequences.

Season 3 Opening Theme

The opening theme is “Natsuko” by FUNKY MONKEY BΛBY’S. The song gives the season an energetic summer identity that fits the Palau setting and the youthful atmosphere of the series.

Season 3 Ending Theme

The ending theme is “Hadaka no Mermaid” by Mameshiba no Taigun. The song continues the playful identity of the anime while matching the unusual humor associated with Grand Blue.

Episode 9 and the More Chaotic Side

Season 3 also continues the series’ willingness to adapt some of its more difficult comedic material. Episode 9 focuses on the older members beginning to think about job hunting and the future.

Instead of producing a serious university-career discussion, however, the characters bring a collection of absurd personal problems into the conversation.

This is classic Grand Blue: serious adult concerns are immediately transformed into chaos.

Episode 10

Later episodes continue the series’ unpredictable structure, mixing everyday university problems with romantic situations and comedy.

The anime continues to use its large supporting cast, meaning that even characters who are not part of the central Iori and Chisa relationship can receive their own comedic storylines.

Episode 11

Episode 11 returns to the Okinawa-related storyline, with Iori and Chisa becoming involved in another complicated situation while Aina and Kohei have their own problems.

The episode demonstrates how Grand Blue can take a relatively simple trip and turn it into multiple overlapping misunderstandings.

Episode 12

Episode 12 is titled “Okinawa Re-landing (Back)” and continues the story surrounding Aina and Kohei.

The official synopsis describes Iori and Chisa encountering Aina and Kohei after they leave a love hotel, leading to questions about what happened behind the scenes during the Okinawa trip.

Aina secretly traveled to Okinawa with the intention of interfering with the trip, but Kohei’s behavior repeatedly causes her plans to fail. The situation becomes even more complicated after news concerning Kohei’s favorite voice actress leaves him devastated.

The Final Episode’s Romantic Chaos

The final episode continues the series’ habit of mixing romantic feelings with completely ridiculous circumstances.

Instead of resolving every relationship in a traditional dramatic way, Grand Blue keeps its comedic personality intact and leaves its characters dealing with the consequences of their own decisions.

The Ocean and the Characters

The ocean is more than scenery in Grand Blue. Diving gives the characters a shared interest that keeps the group connected even when their personalities are completely different.

Underwater scenes also provide an important contrast to the noisy comedy. When the characters are underwater, the atmosphere becomes calmer and the beauty of the environment becomes the focus.

Why the Diving Scenes Matter

Without diving, Grand Blue would lose one of its most important contrasts.

The series can move from a ridiculous party to a serious diving lesson and then into a beautiful underwater environment. This combination is part of what makes the anime visually and tonally unusual.

Comedy and Character Chemistry

Grand Blue’s comedy works primarily because of character chemistry rather than complicated plot mechanics.

Iori, Kohei, Chisa, Aina, Azusa, Nanaka, Tokita, Kotobuki, and the rest of the group all have different personalities. When they are placed together, even ordinary events can become unpredictable.

The Importance of the Supporting Cast

The supporting cast is essential to Season 3. Characters such as Tokita, Kotobuki, Nojima, Yamamoto, Mitarai, and others allow the story to move away from the main romantic relationship and explore different forms of comedy.

This also makes the university world feel larger. Grand Blue is not only the story of Iori and Chisa; it is the story of an entire group of students whose lives constantly overlap.

Summer Atmosphere

Season 3 has a strong summer identity. Palau, ocean water, beaches, tropical skies, diving equipment, and outdoor adventures create a natural summer atmosphere.

Even when the characters are behaving completely irrationally, the environment reminds viewers that Grand Blue is still an anime about enjoying the ocean and university life.

The Grand Blue Drinking Tradition

Drinking parties remain one of the franchise’s recurring comedy elements. The Peek a Boo members have a reputation for turning almost every gathering into an opportunity for excessive celebration.

These scenes are part of the exaggerated comedy of the series and help explain why Iori’s university experience is so different from the normal campus life he may have imagined.

The Balance Between Comedy and Romance

Season 3 continues to keep romance in the background while allowing relationships to develop naturally. The characters’ feelings are often communicated through small reactions, awkward conversations, misunderstandings, and jealousy rather than long dramatic speeches.

This approach fits Grand Blue because the comedy always remains central.

The Meaning of Friendship

Beneath the jokes, Grand Blue is strongly connected to friendship. Iori’s life has changed because of the people he met after entering university.

His friends may cause endless trouble, but they also provide experiences that he would never have had otherwise. Diving trips, travel, competitions, parties, and unexpected adventures all become part of his university memories.

Season 3 and Character Growth

The characters do not suddenly become completely different people, but Season 3 gives them opportunities to think about their future.

Iori begins to see that university life will eventually move forward. Older members are thinking about graduation and careers, while younger members will eventually inherit the responsibilities of the club.

This adds a subtle coming-of-age element beneath the comedy.

The International Adventure

Moving the story to Palau allows Grand Blue to explore the idea of traveling with friends. International travel brings new expectations, unfamiliar surroundings, and opportunities for characters to see each other differently.

Of course, with Iori and Kohei involved, the trip cannot remain peaceful for long.

New Environment, Same Characters

One of the strengths of Season 3 is that changing the location does not change the personality of the show. The tropical environment is new, but Iori, Kohei, Chisa, Aina, Azusa, and the rest of the group remain recognizably themselves.

That allows the anime to feel fresh without losing the identity established by the previous seasons.

Official Cast

• Iori Kitahara: Yuma Uchida
• Kohei Imamura: Ryohei Kimura
• Shinji Tokita: Hiroki Yasumoto
• Ryujiro Kotobuki: Katsuyuki Konishi
• Chisa Kotegawa: Chika Anzai
• Nanaka Kotegawa: Maaya Uchida
• Azusa Hamaoka: Toa Yukinari
• Aina Yoshiwara: Kana Asumi
• Sakurako Busujima: Aya Yamane
• Gen Nojima: Takuya Eguchi
• Shinichiro Yamamoto: Junya Enoki
• Yu Mitarai: Natsuki Hanae
• Shiori Kitahara: Sumire Morohoshi
• Naomi Otoya: Yoshino Aoyama
• Kaya Mizuki: Nana Mizuki

Official Production Team

• Original Work: Kenji Inoue & Kimitake Yoshioka
• Director / Sound Director / Script: Shinji Takamatsu
• Character Design / Chief Animation Director: Hideoki Kusama
• Chief Animation Director: Yoichi Ueda
• Art Director: Minoru Akiba
• Prop Design: jimao
• Color Design: Aiko Matsuyama
• Photography Director: Naoyuki Kato
• Editing: Shun Tokuda
• Music: Yukari Hashimoto
• Animation Production: Zero-G × Saber Works

What Makes Grand Blue Season 3 Different?

The biggest difference is the scale of the adventure. Earlier seasons established the characters and their university environment, while Season 3 takes them outside Japan and introduces Palau as a major setting.

The international location gives the anime more opportunities for ocean scenery, diving adventures, travel comedy, and new character interactions.

A New Chapter for Iori

Iori’s journey continues to develop from simple university newcomer to someone who has become deeply connected to his friends and diving club.

He may still complain about the ridiculous situations around him, but the experiences have become an important part of his life.

Grand Blue’s Unique Identity

Grand Blue Dreaming Season 3 maintains the identity that made the series recognizable: beautiful diving scenes, university friendships, romantic misunderstandings, ridiculous comedy, and characters who rarely behave normally.

The Palau setting adds a fresh layer without removing the core elements that define Grand Blue.

Final Thoughts

Grand Blue Dreaming Season 3 expands the world of the series by taking Iori and his friends to Palau for their first major overseas adventure. The tropical location creates a fresh visual atmosphere, while the characters continue to deliver the chaotic comedy and friendship that fans expect.

The season also gives the story a chance to explore a slightly more mature idea: university life does not continue forever. As older students begin thinking about careers and the future, Iori starts to realize that his own time at university will eventually change.

But before anyone becomes too serious, Grand Blue remains Grand Blue. There is still diving, romance, drinking, embarrassing situations, misunderstandings, and an impressive ability to turn almost any normal situation into complete chaos.

With Palau as its new setting and the familiar Peek a Boo members returning, Season 3 continues the strange combination of ocean adventure and outrageous university comedy that defines the franchise.