# Kohei Imamura Kohei Imamura has the unnerving ease of someone who can turn a casual hangout into a test of everyone else's composure. Watching him in Grand Blue means accepting that dignity is often the first thing sacrificed for a laugh, and he is rarely the person trying to rescue it. The pleasure is in his timing: he can make an outrageous bit feel like the obvious next move, then leave the audience to notice how quickly they accepted it. That makes him an excellent guide to the series' comic nerve, even when his own judgment is clearly not the one to follow. ## Fast Facts - **Japanese name:** 今村耕平 - **Age:** 18 (Manga), 20 (Anime) - **Height:** 178 cm - **Gender:** Male - **Occupation:** University Student - **Affiliation:** Grand Blue, Peek a Boo, Izu University - **Japanese VA:** Ryouhei Kimura ## Appearance Kohei's tall, broad presence gives his jokes a physical confidence. He rarely seems to shrink from attention, and that openness makes his reactions easy to read even when the situation around him is becoming absurd. The design has the directness of a comedy performer: a clear silhouette, expressive shifts, and a face that can move from casual certainty to full alarm without needing a long explanation. He looks comfortable taking up space, which helps the show land the contrast between his bold presentation and the questionable choices that presentation tends to endorse. There is an uncomplicated visual readability to him. You can tell when he is pleased with himself, when he is caught off guard, and when the joke has outrun his ability to control it. That expressiveness keeps the comedy brisk, while his ordinary student look makes the escalation feel close enough to everyday life to be funny. ## Personality Kohei's defining trait is his appetite for a laugh, especially when the laugh depends on other people losing their composure. He has the confidence to commit fully to a ridiculous idea, and he often treats hesitation as an invitation to push harder. The performance is not polished mischief. It is loud, immediate, and very pleased with itself, which is exactly why it can be funny even when you would not want to share his judgment. He has a social instinct for finding the pressure point in a group, then turning it into a spectacle. That instinct gives him comic force, but it also makes him a useful measure of the show's limits: the joke works best when his enthusiasm is allowed to look foolish too. Kohei is not a quietly observant presence. He puts his choices on display and trusts the room to react. I find that quality refreshing in a comedy where restraint would drain the scene; the show lets his bravado carry momentum, then gives the audience room to decide whether the confidence was ever deserved. ## Kohei Imamura's Story ### Spoiler-free introduction Early on, Kohei gives Grand Blue a dependable source of social chaos. His energy is extroverted and shameless, and the comedy often draws its charge from how readily he commits to a bit. You do not need to admire his decisions to enjoy the certainty with which he makes them. He helps establish a world where a person's dignity can be treated as negotiable, especially when the group senses a chance to laugh. The useful thing about meeting him early is that his broad style tells you what sort of comic company the series keeps: embarrassment is part of the language, and a straight face is never guaranteed to survive. Kohei is especially effective when the joke catches up with him as well as everyone around him. His confidence invites the spectacle, but it does not make him immune to it. That push and pull is enough to make him memorable without asking you to mistake loudness for wisdom. ### Spoilers beyond the opening stretch As you spend more time with Kohei, his usefulness to the comedy becomes clearer. He is not simply a source of noise; he helps reveal how a group gives permission to its worst impulses. His willingness to go along can make an outrageous moment feel communal, while the same willingness can expose how thin the line is between playing along and making a bad situation worse. That reading does not turn him into a moral center. It makes him more interesting to watch because his confidence has consequences for the mood around him, even when the series is still aiming for a laugh. His best scenes leave a little aftertaste: the joke lands, and then you realize how much of its momentum came from people choosing not to be the one who stops it. Kohei can be ridiculous without becoming a lesson, and that balance suits Grand Blue's comic voice. ## Relationships - **Aina Yoshiwara:** Aina gives Kohei a connection that is useful to consider through their shared social world, rather than as a simple label. Their scenes invite you to watch how he behaves when another person is part of the exchange, because his performance changes with the audience in front of him. That keeps the interaction lively and lets his confidence read as a habit he brings into company, not a private pose. ## Watch Kohei Imamura's Story Start with Grand Blue (2018). Kohei is a strong reason to keep watching if you enjoy comedy built from people committing too hard to a bad idea and then having to live inside the reaction. His presence is broad, but it is not interchangeable: the assured delivery and visible delight in a bit give the chaos a human rhythm. Grand Blue Season 2 continues his story. For legal streaming, Grand Blue (2018) is available on Amazon Prime Video, Crunchyroll, and Netflix, while Grand Blue Season 2 is available on Crunchyroll. The 2018 series is the natural starting place, since it gives you the comic context in which Kohei's energy makes sense. His appeal depends on your tolerance for embarrassment comedy; if watching a character double down makes you wince and laugh at the same time, he is likely to work for you. **Start here:** [Grand Blue](https://hozuna.com/anime/grand-blue) — Amazon Prime Video, Crunchyroll, Netflix - [Grand Blue](https://hozuna.com/anime/grand-blue) (2018) — Amazon Prime Video, Crunchyroll, Netflix - [Grand Blue Season 2](https://hozuna.com/anime/grand-blue-season-2) (2025) — Crunchyroll ## Questions **How tall is Kohei Imamura?** Kohei Imamura is 178 cm tall. His height contributes to the confident physical presence that suits his broad comic delivery. **Who voices Kohei Imamura in Japanese?** Ryouhei Kimura voices Kohei Imamura in Japanese. His performance gives Kohei's confidence an energetic, expressive edge. **When does Kohei Imamura first appear?** Kohei first appears in Grand Blue (2018), where he is a main character. Start there before watching Grand Blue Season 2. **Where can I watch Kohei Imamura's story?** Grand Blue (2018) streams on Amazon Prime Video, Crunchyroll, and Netflix. Grand Blue Season 2 streams on Crunchyroll. **Is Kohei Imamura worth watching for?** Yes, if you enjoy embarrassment comedy and characters who commit to a joke with complete confidence. Kohei's energy gives the comedy a clear, expressive center, though his judgment is often part of the joke.