A student at Chidori High and a close friend of [Rintaro](https://anilist.co/character/268677/Rintarou-Tsumugi)'s, alongside [Shouhei](https://anilist.co/character/272240/Shohei-Usami) and [Ayato](https://anilist.co/character/272243/Ayato-Yorita).

Despite his attractive features he always appears gloomy, making makes him appear hard to talk to. But while he is more withdrawn than his friends he cares deeply about them and is naturally kind despite his cynical exterior. He is also incredibly intelligent, being the smartest student at Chidori High and even outdoing Kikyo's students, as noted by [Subaru](https://anilist.co/character/270095/Subaru-Hoshina) who begins to study with him.

~!Due to his standing as a genius he became isolated from his peers in middle school, resulting in his current introverted personality.!~

This story takes place in a particular town with two infamous schools in constant dispute: Chidori High, a boys' school predominantly attended by low-class students with damning grades, and its neighbor Kikyo Girls' High, with most of its female students coming from wealthy and prestigious families. One day, high school second-year Rintaro Tsumugi, a fierce-looking but gentle-minded student at Chidori, is helping at his family's patisserie when he encounters a female customer by the name of Kaoruko Waguri. Rintaro enjoys his time with Kaoruko, as she doesn't judge him for his appearance, but this blissful peace is quickly disturbed when Rintaro makes the discovery that Kaoruko is actually a student at Kikyo. This revelation marks the beginning of the two's strenuous tale, as they fight against the limitations placed upon them by their schools and surroundings in an attempt to find their own path!
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(Source: K Manga)

Chidori High is a boys’ school that takes in the dregs of society with the lowest grades. Next door stands Kikyo Girls’ High, where the wealthy, high-class families send their precious daughters. Chidori second-year Rintaro, who has a fierce face but a gentle heart, is helping at his family’s patisserie when he meets a girl named Kaoruko. The two hit it off right away…but this blissful peace is quickly disturbed when Rintaro discovers that Kaoruko is actually a student at Kikyo. Worse, she doesn’t seem to realize what a huge problem this really is! Will these two be able to forge a path for themselves, and sidestep the traps (metaphorical and literal) laid by their classmates?
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(Source: Kodansha USA)

__Height:__ 177 cm 
__Agency:__ Gekidan Himawari  
__Awards:__  Best New Actor at the 5th Annual Seiyuu Awards (2011)  
__Non-Anime Roles:__
~!- Lean (Final Fantasy Type 0)
- Ventus, Roxas (Kingdom Hearts series)
- Neku Sakuraba (The World Ends With You)
- Banagher Links (Mobile Suit Gundam: Gundam vs. Gundam Next)
- Rinne Rokudo (Kyoukai no Rinne trailer)
- Enma Kozato (Katekyo Hitman REBORN! Vomic)
- Razor (Genshin Impact)
- Rean Schwarzer (The Legend of Heroes Series)
- Protagonist (Persona 5: The Phantom X)
!~

[Profile](https://profile.himawari.net/view/1559)

Koki Uchiyama is a Japanese actor and voice actor from Saitama Prefecture affiliated with Himawari Theatre Group.

Saku Natsusawa