sakuraniku_umatarou
Artist. Draws eromanga. The name is most probably a pun, as 桜肉 is "horse meat" and 馬 is "horse".
Names: 桜肉馬太郎 (Sakuraniku Umatarou), 下北沢鈴成 (Shimokitazawa Suzunari)
See also
- The Doujinshi & Manga Lexicon: http://doujinshi.mugimugi.org/browse/author/8212/Sakuraniku-Umatarou/