Artist, illustrator, mangaka who is working with いちの ([[Ichino]]), a manga plot writer. 
For their professional manga works, they use their circle name, Kawaisounako, as a joint pseudonym.

Japanese name: ゆゆ (Yuyu)
Circle name / site name / joint pseudonym with Ichino: かわいそうな子 (Kawaisou na Ko)
Old nickname: YU-YU (ゆーゆ, Yuuyu)
Old site name: でびるくらいまっくす (Devil Climax)
yu yu