The Body Double Disaster and a Voice That Moves Mountains

The Palau diving shop arc continues, and this episode is pure Grand Blue chaos from the moment a TV crew walks through the door. What starts as a simple promotional shoot for the new branch spirals into one of the most unhinged sequences the show has pulled off, complete with a body double scheme, a voice actress audio file weaponized for both good and evil, and a quiet emotional thread that lands harder than expected.

Ikegoshi's Desperation Is the Right Kind of Absurd

The episode introduces Ikegoshi Yuichi, a minor celebrity hosting his first show after seven years of being told he lacks a “big personality.” His dream is to market himself as a diver idol, which is already a wonderfully specific ambition. But the moment he scrapes his face on coral during a dive, the entire production threatens to collapse unless someone steps in as his body double.

Enter Kouhei.

The logic is flimsy at best. With some hair dye, the producer thinks Kouhei could pass for Ikegoshi. Iori and Aina immediately object, calling Kouhei a “pretty big weirdo” in perfect unison. Ikegoshi’s response is what sells the bit: “That’s a problem… but not for me!” The man is so desperate for his shot that he embraces the weirdness. It is the kind of reckless optimism that Grand Blue loves to reward with immediate consequences.

And those consequences arrive fast. Kouhei’s first attempt at being a body double ends with him unzipping his wetsuit all the way down when the crew only wanted a little chest flash. Aina’s deadpan “You unzipped it all the way, didn’t you?” carries the exhausted energy of someone who has known Kouhei far too long.

The Food Review Segment Is a Masterclass in Terrible Commentary

The real meat of the episode is the food review sequence, and it is a thing of beauty. Ai Takahashi, the show’s co-host, tries desperately to sell the local Palauan cuisine with professional enthusiasm. Giant clam meat, mangrove crab, taro potato, whole lobster. She sets up each dish with the polished energy of someone who knows how television works.

Kouhei responds to every single one with the most literal, useless commentary possible. “It tastes like clam.” “Yeah, it’s bitter.” “Tastes like potato.” “One big shrimp.”

The producer’s mounting despair is palpable. Ai tries to salvage things by appealing to his love of the ocean, hoping for some seafood expertise. Instead, Kouhei launches into a bizarre tangent comparing the lobster’s “flashy first impression combined with thoughtful execution” to a magical girl anime, name-drops Kaya-sama’s stage presence, and then circles back to “Tastes like shrimp.” Aina’s quiet “It didn’t work” is the perfect punctuation.

This is where the episode reveals its hand. The producer, desperate for usable footage, brings out bat soup and strong liquor. The logic is that extreme food and alcohol will make for good television regardless of commentary quality. It is a terrible idea that somehow gets worse.

Iori's Revenge Is Petty, Brilliant, and Genuinely Dangerous

When Ai accidentally sets the table on fire with high-proof alcohol, Iori steps in to save her. It is a genuinely cool moment. He catches the situation, moves fast, and Kouhei backs him up. Ai even comments afterward that Iori is “pretty dependable.”

But before any of that happens, Iori has already executed one of the pettiest revenge schemes in recent memory.

Earlier in the episode, Kouhei’s chronic nudity sabotaged Iori’s chance at a date with Ai. She had asked Iori to show her around the island, and Kouhei’s inability to keep his clothes on scared her off. Iori, furious, swears revenge.

His method is inspired. He records lines in Kaya-sama’s voice, hides a headset on Kouhei, and uses it to feed him directions during the food shoot. The reveal that Kouhei can hear Kaya’s voice “no matter how faint it is” is treated as his special power, and the show plays it completely straight. The moment the voice says “Kouhei-kun,” his entire demeanor shifts. He goes from dead-eyed monotone to rapturous food critic in an instant.

The edited audio is crude but effective. “I… made that” transforms the bat soup into ambrosia. Kouhei delivers an over-the-top review about “ambrosia crafted by the gods” and “the forbidden fruit from heaven” with complete sincerity. The production team is thrilled. Ai is confused but rolling with it.

Then Iori’s pettiness takes over. He makes Kouhei eat clam shells. He makes him drink Spirytus straight. He makes him do a triple flip. The line between “helping the shoot” and “torturing his friend” evaporates completely. Chisa and Aina try to stop him, but Iori is too deep in his revenge fantasy.

The sequence works because it is not just random cruelty. Every command escalates naturally from the previous one, and Kouhei’s absolute devotion to Kaya’s voice makes each escalation funnier. When Kouhei briefly snaps out of it, saying “Something’s not right here,” the voice simply says “Trust me,” and he immediately accepts that nothing is wrong. It is a perfect encapsulation of his character.

Aina's Feelings Get the Quiet Treatment They Deserve

Beneath all the chaos, the episode continues the thread from last time. Kouhei asked Aina if she had feelings for Iori, and she denied it with the kind of over-the-top deflection that only makes the truth more obvious. “Never. Not in a million years.” Sure, Aina.

Throughout the episode, small moments accumulate. When Chisa mentions that Ai asked Iori on a date, Aina’s reaction is immediate. “What?” Chisa even asks if she is relieved when the date falls through, and Aina’s flustered denial is textbook Grand Blue emotional honesty hiding behind comedy.

The final scene between Kouhei and Aina is the episode’s quietest moment. She confronts him about sabotaging Iori’s date, and he admits he cannot stand to see Iori happy. She insists again that he has the wrong idea about her feelings, blaming the “tropical hype” for her behavior. Kouhei does not buy it, and neither do we.

Then, alone, Kouhei says it plainly: “Even I can tell she’s truly in love with him.”

It is a surprisingly tender beat for a show that spent most of the episode making a man eat clam shells. Grand Blue has always been good at threading genuine emotion through its absurdity, and this lands without undercutting itself. Aina’s feelings are not a punchline. They are just there, acknowledged quietly, waiting for whatever comes next.

The Episode Knows Exactly What It Is

What makes this episode work is its commitment to every bit. The body double premise is ridiculous, and the show never pretends otherwise. Ikegoshi’s desperate optimism, the producer’s fraying patience, Ai’s professional composure crumbling in the face of Kouhei’s nonsense. Every character plays their role with the exact right energy.

The Kaya voice gimmick could have been a one-note joke, but the episode builds it into a full sequence with rising stakes. Iori’s revenge starts as helpful direction and devolves into pure malice, and the show lets him be petty without apologizing for it. Chisa calls him out. Aina calls him out. He does not care. He is having too much fun.

And through it all, the Palau setting remains a pleasant backdrop. The tropical scenery, the diving shop atmosphere, the casual island vibe. It is not the focus, but it gives everything a relaxed, vacation-like feel that makes the chaos feel less mean-spirited than it might otherwise.

Closing Thoughts

This is Grand Blue operating at full power. The comedy is sharp and escalating, the character dynamics are well-balanced between absurdity and genuine feeling, and the episode knows when to let a quiet moment breathe. Kouhei’s devotion to Kaya-sama being weaponized against him is the kind of callback that rewards long-time viewers, and Aina’s unspoken feelings add weight without dragging down the energy.

Ikegoshi got his wild, surprising show. Whether he will still be happy when he watches the footage is another question entirely.