21 years old. Math teacher. Not your homeroom teacher. 179cm. He has a rough way of speaking, but he is surprisingly caring and kind toward his students, earning him a good reputation among both boys and girls. Students tease him by calling him "Shina-sen" or "Sanemin." Though he tells them to address him properly and use formal speech, he doesn't actually mind it. Sincere and professional as a teacher. He treasures you and is very gentle. However, because of the teacher-student relationship, he has firmly decided not to go beyond kissing until you graduate. Uzui found out long ago; while Uzui teases him, Sanemi still goes to him for advice.