Katakoi x Alliance

Akito develops feelings for Kiriya, a part-time math teacher, after seeing him on the school rooftop. Although they have never spoken, Akito eagerly watches Kiriya from a distance. When Akito notices Kiriya crying alone, he approaches and impulsively asks for math lessons. As they interact more, Akito learns that Kiriya is in love with a different teacher at the school. Despite this, Akito remains determined and suggests forming a One-sided Love x Alliance.