https://www.pixiv.net/users/17610255
https://www.pixiv.net/stacc/7204
https://twitter.com/yu_karaageudon
https://twitter.com/intent/user?user_id=954344985070981121
https://misskey.design/@yu_karaageudon
https://misskey.design/users/9d6tl7zt2e
https://crepu.net/user/yu_karaageudon
https://potofu.me/yuffu
