https://www.pixiv.net/users/416492
https://www.pixiv.net/stacc/ouka1225
https://twitter.com/_ooka
https://twitter.com/_ooka_f
https://twitter.com/intent/user?user_id=68175050
https://twitter.com/intent/user?user_id=3010239062
https://seiga.nicovideo.jp/user/illust/4417457
http://www.nicovideo.jp/mylist/14744235
https://www.nicovideo.jp/user/4417457
https://sketch.pixiv.net/@ouka1225
http://rakuyou.blog.jp
http://privatter.net/u/_ooka
http://privatter.net/u/_ooka_f
https://www.pixiv.net/users/11629391
https://www.pixiv.net/stacc/rakyou00
