Hansuke Doi

Everyone's childhood crush. What's not to love about Doi-sensei? A kind-hearted and good-natured teacher who is warm, yet strict to his students. He is well loved by 1st year hagumi and most nintamas and staff at Ninjutsu Gakuen. He often gets headaches and stomach aches due to his students' poor academic performances.

Settsuno Kirimaru
During school breaks, he and Kirimaru live together in a rented house in the city. He often ends up helping Kirimaru with his part-time jobs, such as baby-sitting, selling food, and the like. Like Kirimaru, he grew up without parents, and as such shares mercy for him.

Yamada Denzou
He is pretty close with Yamada Denzou and his family.

Moroizumi Sonnamon
Moroizumi Sonnamon from Tasogaredoki considers Doi his rival. However, Doi just considers him a nuisance, and easily defeats him by throwing school supplies at him. ==Trivia ==


 * Shares a voice actor with Iruka from Naruto, and plays a similar role to him as well.