Kousei is formerly a child prodigy in playing piano, often dubbed as the "Human Metronome". He was able to play the piano with extreme precision and discipline and thus had won many competitions across Japan.

Piano prodigy Arima Kousei dominated the competition and all child musicians knew his name. But after his mother, who was also his instructor, passed away, he had a mental breakdown while performing at a recital. This resulted in him no longer being able to hear the sound of his piano playing. Two years later, Kousei hasn’t touched the piano and views the world without any flair or color. He was content at living out his life with his good friends Tsubaki and Watari until, one day, a girl changed everything. Miyazono Kaori is a pretty, free spirited violinist whose playing style reflects her personality. Kaori helps Kousei return to the music world and show that it should be free and mold breaking unlike the structured and rigid style Kousei was used to.

__Height:__ 173 cm
__Hobbies:__ Karaoke, gaming
__Agency:__ Across Entertainment

[Profile](http://across-ent.com/talent/men/natsuki_hanae.html) | [Website](https://columbia.jp/hanaenatsuki/) | [Twitter](https://twitter.com/hanae0626) | [YouTube](https://www.youtube.com/channel/UC3C3YOGFjn7Pq3lOCeUFHfg) | [Blog](http://ameblo.jp/hanae0626/) | [Instagram](https://www.instagram.com/hanae_natsuki0626/)

Won Best Rookie at the 9th Seiyuu Awards (2015) for his role as Inaho Kaizuka in _Aldnoah.Zero_. Won Best Lead Actor at the 14th Seiyuu Awards (2020) for his role as Tanjiro Kamado in _Demon Slayer: Kimetsu no Yaiba_.

He is married, is a father of twin daughters, and has a cat named [Konpei](https://anilist.co/staff/269430/Konpei).

__Non-Anime Roles:__

- Protagonist - Metaphor: ReFantazio (VG)
- Ling Yang - Wuthering Waves (VG)

Konrad Bösherz is a german voice actor and actor.

Maxwell Braden Mittelman is an American voice actor who provides voices for English versions of anime, animation and video games.

Kosei Arima was a piano prodigy until his cruel taskmaster of a mother died suddenly, changing his life forever. Driven by his pain to abandon piano, Kosei now lives in a monotonous, colorless world. Having resigned himself to a bland life, he is surprised when he meets Kaori Miyazono, a violinist with an unorthodox style. Can she bring Kosei back to music, and back to life? 
 
(Source: Kodansha Comics) 
 
Note: Nominated for the 2012 Manga Taisho Awards.

OVA bundled with the 11th Shigatsu wa Kimi no Uso manga volume. 
 
The OVA focuses on Kousei, Emi and Takeshi when they were younger, showing their troubles during their competitions and the beginning of their rivalry. 
 
(Source: Shigatsu wa Kimi no Uso Wikia)

Special volume released with the DVD of Shigatsu wa Kimi no Uso. 
A story from Kousei and Tsubaki's childhood.

There’s not a competition that piano prodigy Arima hasn’t won since he started playing. His renditions are matchless in their precision. When he’s only eleven, however, his peerless fingers fall silent—right up there on stage.
 
Exploring the shock of the incident and its aftermath from his friends and rivals’ perspectives, A Six-Person Etude accompanies the boy’s halting efforts to pick himself up as an adolescent.
 
(Source: Kodansha USA)

Kousei Arima