Kuniumi, Maitake

舞竹国海

A student teacher at Risa and Ōtani's school. Maitake, who prefers the nickname "Maity", is 24 years old [he] and is taller than Risa and extraordinarily good-looking. He soon acquires a legion of female fans. As he gains affection from Risa, Ōtani soon becomes jealous and quickly starts to realize his feelings for her.
Interestingly, he bears a resemblance to "Cain-sama", a character in one of Risa's favorite visual novels.