Sako Toshio

[Twitter](https://twitter.com/oshitokosa) He was born in Shimonoseki, Yamaguchi Prefecture. After graduating high school he got a job as a barber. When he was around 28-years old, he realized he wanted to become a mangaka. He is a self-taught artist. He became [Hinata Takehi's](https://anilist.co/staff/106415/Takeshi-Hinata) assistant, without pay. He learned a lot of manga techniques under Takeshi. Before becoming serialized, he created numerous one-shots for manga contests. One of them involved karate. [Usokui](https://anilist.co/manga/145521/Usokui/) was his first published manga.