Sakurai Tomozo

Japanese name:

桜井 智蔵

Tomozo Sakurai is Tomoki's equally perverted grandfather, whose dream was to make out with every woman in the world, but could not do so before his death. He frequently appears during Tomoki's flashbacks (or any other supernatural phenomena) to give him (albeit perverted) advice, which always seems to help the latter in dire situations.

Voiced by: Hiroshi Iwasaki

Wikipedia