Katou Takuji

He was once an assistant to the mangaka [Atsushi Ohkubo](https://anilist.co/staff/100059/Atsushi-Ookubo). [Twitter](https://twitter.com/isiyumi) | [Official Website](http://newrp.blog34.fc2.com/) | [Pixiv](https://www.pixiv.net/en/users/1573847)