Chikai Uno

誓 い一

Chikai is the most popular guy at the school. He is kind of narcissistic (since he loves himself a lot). At first he had a girlfriend, Yukine, but then they broke up. His goal was to make Hanabi to see the greatness of "Chikai-sama" so she could accept that boys are not that horrible like she said but eventually he came to fall in love with her.