Artist.

Japanese name: 蜻蛉 (reading is given as かげろう, Kagerou)
Site name: 天然人工海水屋さん
Circcle name: 北方樂所 (Hoppougakuso) (the other members are listed "here":[http://www.hoppogakso.com/member.html])
kagerou (gigayasoma)