Artist, illustrator, mangaka, [[niconico]] video creator.

Japanese name: 夕海 (reading is given as ゆあ, Yua)
The other name(?): 隣の愉快犯
Circle & site name: "Check Mate!" or "CheckMate!"

h4. Characters

* [[Kamio Reiji (Yua)|]]
* [[Kohaku (Yua)|]]
yua (checkmate)