Also known as: 臼井影郎
A character from Sayonara Zetsubou Sensei.
Kagerou is one of the few known males of Class 2-へ ("2-He", or "2-6"/"2-F") and the actual Class Representative, cursed with invisibility to the point of vanishing in thin air. To add humiliation to lack of presence, he can only be seen when his balding head is exposed. His name derives from "影が薄い" - "kage ga usui" ("overshadowed"), and his surname also refers to his thinning hairline.