https://www.pixiv.net/users/335128
https://www.pixiv.net/stacc/kokera32
https://twitter.com/kokera1974
https://twitter.com/intent/user?user_id=902544037789409280
https://sketch.pixiv.net/@kokera32
https://mixi.jp/show_friend.pl?id=1676657
https://www.dlsite.com/maniax/circle/profile/=/maker_id/RG03275.html
https://photo.mixi.jp/home.pl?owner_id=1676657
http://b.dlsite.net/RG03275/