Tomio Nakano is a male student of Yandere School.
He's a part of the computer club, so he's often talking with the head. For example: before lessons, they go talking on the rooftop, and they talk about programming computers. He says he'd like to create a game about zombies.
He's tall and he's got straight green hair and green eyes. He's got a fair complexion.
He can be pushed off the roof, along with the club head and Angelina (chapter 2)