Pixiv - http://www.pixiv.net/member.php?id=4155871
Seiga - http://seiga.nicovideo.jp/user/illust/48548699?target=illust_all
Twitter - https://twitter.com/hopepene
Old seiga (stopped) - http://seiga.nicovideo.jp/user/illust/17066340?target=illust_all
Old twitter (stopped) - https://twitter.com/curripu