Artist.
Japanese name: 炭酸男 (Tansan Otoko) (reading is a best guess)
The other name: 炭酸 (Tansan)
https://www.pixiv.net/users/82604
https://www.pixiv.net/stacc/takahei73
https://twitter.com/TNSN73
https://twitter.com/intent/user?user_id=849191808412172289
http://commons.nicovideo.jp/user/353242
https://seiga.nicovideo.jp/user/illust/577436
https://www.nicovideo.jp/user/577436
https://sketch.pixiv.net/@takahei73
http://pixiv.cc/takahei73
