His real name is Sumi Toshihiko, according to Anime News Network -> http://www.animenewsnetwork.com/encyclopedia/people.php?id=12762.
https://www.pixiv.net/users/17548743
https://www.pixiv.net/stacc/tamaokibenkyo
https://x.com/TamaokiBenkyoo
https://x.com/i/user/219159477
https://www.deviantart.com/tamaokibenkyo
https://foundation.app/@TAMAOKIBenkyo
https://pawoo.net/@TamaokiBenkyoo
https://pawoo.net/web/accounts/75336
https://tamaokibenkyo.fanbox.cc
https://www.pixiv.net/fanbox/creator/17548743
https://sketch.pixiv.net/@tamaokibenkyo
https://misskey.io/@TamaokiBenkyo
https://misskey.io/users/9bmj7ijqxa
https://www.instagram.com/benkyotamaoki/
https://www.youtube.com/@jarimichibedsidegirlfriend
https://www.youtube.com/channel/UCfXJ5xR3pczx3mDmeTeXLrg
https://www.amazon.co.jp/stores/author/B006699BLI
https://bsky.app/profile/tamaokibenkyoo.bsky.social
https://bsky.app/profile/did:plc:g27jlcyyupo65hvousziglg4
https://lit.link/TamaokiBenkyoo
https://note.com/tamabenzakki
https://suzuri.jp/tamaokibenkyo
https://twitcasting.tv/tamaokibenkyoo
https://www.pixiv.net/users/5276
https://www.pixiv.net/stacc/yakinikudaisukikko
https://x.com/tamaokibenkyo
https://gorillatamaoki.fanbox.cc
https://benkyoboxx.tumblr.com
http://twitpic.com/photos/TamaokiBenkyoo
http://twitpic.com/photos/tamaokibenkyo
http://yfrog.com/user/TamaokiBenkyoo/photos
