Summary
Fukasaku is the husband of Shima and an elder toad residing on Mount Myoboku. Recognized as one of the Two Great Sage Toads alongside his wife, they are considered heirs to the Great Toad Sage. Fukasaku, holding the title of Head (Kashira), played a pivotal role in training Jiraiya in Senjutsu alongside Shima, and later instructed Naruto in the art alone.
