Akari Koumoto

Asahi's class teacher, who teaches English. Akane is his great-grandmother. Although his demonic lineage is weak, making him essentially human, his physical capabilities are beyond human. He finds himself troubled by the various problems caused by Asahi, Akane, and others, but he wants to avoid a situation where Youko's true identity is revealed, leading to her reluctantly having to leave school, as he cares deeply for his students. He often drinks beer, sometimes causing trouble when he drinks too much.

Despite having a good style and personality, he lacks charm and is still single with no dating experience, which he is very self-conscious about. Mentioning his age or unmarried status, even by students, is met with no mercy. He is currently working at a maid café by his own will, as a form of bride training, which sometimes causes him to become a high-spirited character named "Akari" when drunk.

He is the only person who can stop Akane, managing to do so with his formidable presence and ability despite their positions as the principal and a teacher, and always speaking politely.

He was actually a delinquent known as "Akari," leaving behind a hundred legends such as "Akari of the Hundred Visits" and "The Legend of Akari." However, all these legends are about his past heartbreaks, which he considers his dark history and strongly dislikes having photos or stories from that time publicized.

Regarding Kousuke, he has come to hold a certain fondness for him because Kousuke earnestly expressed his feelings and called him cute, leading to them dating (though they've decided not to go on dates until graduation).

He is 180 centimeters tall, weighs 62 kilograms, was born on January 12, and has blood type B. He likes alcohol, cars, and arm wrestling but dislikes wedding invitations and girls’ gatherings. His special skill is crushing an apple in each hand simultaneously. His hobby is self-improvement.