A student at Tobita Junior High School and Mami's best friend. He initially believed that Mami's supernatural powers were his own, a revelation that deeply upset him upon discovering the truth, though he later supports Mami in developing her abilities. He is a genuine genius, assisting Mami in comprehending and cultivating her powers. Although he is fond of amateur baseball, he performs poorly at it, which leads Mami to occasionally intervene secretly to aid his team. He frequently devises alibis for Mami whenever she encounters trouble with her parents. He possesses a strong understanding of Mami and often provides her with support.
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