Artist. His topics are usually weird or obscure, similar to the artist sakkan.
Full name: 河野雅夫 (Kouno Masao)
Masao has been accused of frequently using unauthorized tracings in his work, including the Young King serialization of Ishida to Asakura.
For more info, see the following:
https://www.pixiv.net/users/32777
https://www.pixiv.net/stacc/syounen_no_uta
https://twitter.com/ma_sa_o
https://twitter.com/intent/user?user_id=14832289
https://pawoo.net/@syounen_no_uta
https://pawoo.net/web/accounts/176184
https://ko-u-no.fanbox.cc
https://www.pixiv.net/fanbox/creator/32777
https://sketch.pixiv.net/@syounen_no_uta
https://skeb.jp/@ma_sa_o
https://lnjoh4vm.fanbox.cc
https://www5c.biglobe.ne.jp/~kurekure
http://twitpic.com/photos/ma_sa_o
