Wataru is a hardcore otaku who puts more priority on his hobby than anything else. His name comes from "Manseibashi o wataru" (?, "to cross over Mansei Bridge"); Mansei Bridge is a bridge that connects Chiyoda and Akihabara. He is not in Nozomu's class, but from the neighboring Class 2-Ho(2-, "2-5" or "2-E") .