Artist, eromangaka.
Japanese name: けちん (Kechin)
Joint circle name & manga pseudonym: 俺的十八禁 (Oreteki Juuhakkin, the artists use this spelling: "ORETEKI18KIN")
Circle & manga partner: Fukiko
https://www.pixiv.net/users/5893974
https://www.pixiv.net/stacc/kechinoreteki18
https://twitter.com/KechinORETEKI18
https://twitter.com/intent/user?user_id=149465922
https://oreteki18.booth.pm
https://pawoo.net/@KECHIN
https://pawoo.net/web/accounts/371978
https://oreteki18.fanbox.cc
https://www.pixiv.net/fanbox/creator/5893974
https://sketch.pixiv.net/@kechinoreteki18
https://oreteki18.sakura.ne.jp
http://www.amazon.co.jp/s/?search-alias=books&field-author=俺的十八禁
http://portal.circle.ms/Circle/Index/10128830
http://webcatalog.circle.ms/Perma/Circle/10128830
https://www.dlsite.com/maniax/circle/profile/=/maker_id/RG01200.html
http://www.dmm.co.jp/dc/doujin/-/list/=/article=maker/id=20372
http://oreteki18kin.blog.fc2.com
http://mokuren.sakura.ne.jp/~oreteki
