https://www.pixiv.net/users/821219
https://www.pixiv.net/stacc/atra_dea
https://twitter.com/atra_dea
https://twitter.com/intent/user?user_id=784683290
https://www.deviantart.com/sadakage
https://sadakage.fanbox.cc
https://www.pixiv.net/fanbox/creator/821219
https://sketch.pixiv.net/@atra_dea
http://atradea.x.fc2.com
https://www.patreon.com/sadakage
https://www.patreon.com/user?u=76097898
https://www.dlsite.com/maniax/fsr/=/keyword_creater/"貞影"
https://www.dlsite.com/maniax/fsr/=/keyword_creater/"貞影（sadakage）"
