Artist.
Nickname: hi-ho- (reading is ヒーホー, Hii Hoo)
The other name: ko-hi-
https://www.pixiv.net/users/59110
https://www.pixiv.net/stacc/masashi_h2o
https://twitter.com/hi_ho_pixiv
https://twitter.com/intent/user?user_id=152698399
https://nijie.info/members.php?id=12039
https://sketch.pixiv.net/@masashi_h2o
https://skeb.jp/@hi_ho_pixiv
http://twitpic.com/photos/hi_ho_pixiv
