Name: Mudano Naito Age: ??? Birthday: December 31st A member of the Oni Agency and an instructor at Rasetsu Academy. A rationalist who hates waste, he wears roller skates because they allow for faster movement. He is basically expressionless, but he is actually kind and surprisingly cares for his students. His students affectionately call him "Muda-sen." Currently serving as an instructor at Rasetsu Academy, Mudano was once an elite member of the Tokyo combat unit. He is a legendary talent who once caused a rain of blood from 100 Momotaro. Mudano takes the death of his comrades more seriously than anyone else, and it is said that he adds to the tattoos on his arms every time a comrade dies. As an academy instructor, he is strict, and for the past few years, he hadn't passed anyone in the entrance exams. However, this year's group was full of talent, and he passed seven students, including Shiki. Fighting Momotaro is a life-or-death matter. He is strict now to keep them from dying, but he is a good mentor who truly cares for his students.