Eromangaka, artist.

Japanese name: 長谷 円 (reading is given as はせつぶら, Hase Tsubura. However he said "you can also read it as "Nagatani En".)
Site name: H.O.H.P
Circle name: 鶴ヶ島ハイツ (Tsurugashima-Heights)
hase tsubura