https://www.pixiv.net/users/269903
https://www.pixiv.net/stacc/tatsu36037
https://twitter.com/PTD_tatsu
https://twitter.com/intent/user?user_id=2960128332
https://pawoo.net/@tatsu36037
https://pawoo.net/web/accounts/563608
https://ptd.fanbox.cc
https://sketch.pixiv.net/@tatsu36037
http://doujinshi.mugimugi.org/browse/author/44498/Tatsuhiko/
https://odaibako.net/u/PTD_tatsu