Male artist, (ero)mangaka.
Name (eromanga, doujinshi): 鈴木 狂太郎 (Suzuki Kyoutarou)
Name (commercial manga): 鈴木 恭太郎 (Suzuki Kyoutarou)
Old name: 狂太郎
Circle & site name: Happy Man
Circle name: Happy Girl
https://www.pixiv.net/users/939318
https://www.pixiv.net/users/52308591
https://www.pixiv.net/stacc/s_kyoutarou
https://twitter.com/kyoutaroucrf250
https://twitter.com/s_kyoutarou
https://twitter.com/intent/user?user_id=477443492
https://twitter.com/intent/user?user_id=3313275410
https://fantia.jp/fanclubs/35142
https://pawoo.net/@s_kyoutarou
https://kyougarou.fanbox.cc
https://sketch.pixiv.net/@s_kyoutarou
https://misskey.io/@s_kyou
https://misskey.io/users/9hhgwdcvcf
http://hmevo.sakura.ne.jp/diary_m/diary_n/
http://hmevo.sakura.ne.jp/hm/
http://www.amazon.co.jp/鈴木恭太郎/e/B00J4ISYCK
http://www.doujinshi.org/browse/author/102706/
https://www.mangaupdates.com/authors.html?id=8350