Manga: Apocalypse of Desire

Right now I have the author's name as 渡純平. I need help in finding the romanization of this name. According to the japanese translation software I use the translation of the last 2 kanji is "Junpei", but I can find nothing on the net to confirm this. The first kanji has several different translations, but I have no idea which one is correct. If somebody know it, please make the corrections. Thx.

From the few sites I was able to find, the reading seems to be "Watari Junpei".