Eizan has no idea that there is a bomb running through his veins. His DNA is linked to that of the best ninja clan that ever existed, the Kaburagi Clan. It is hinted that he has a crush on Okuni and also has a rivalry with Naginata. His weapon is a green plastic ruler.
He was an only child who was raised in an oriental working-class family (with Mr. and Mrs. Kaburagi, his parents) from Tokirohama.
Unaware of this, Eizan just wants to achieve his childhood dream and sole aim of becoming a ninja and avoid selling rice balls, then he is about to get there! His acceptance at Shuriken turns his boring life at home around 180°, making him the youngest person at the school in the most.
Describing his personality, he is intelligent, hardworking, eager to learn, absent-minded and lively. Also, when things have gone wrong for him and without ideas at Shuriken School, he was used to being clumsy (as shown in the episode "Phantom of the Kabuki").
He is slender with fair skin and black hair, and also, he wears a blue and black ninja suit.