Yoshio Yoshida grapples with his unremarkable appearance and social dynamics at school. Despite his differences, his bond with the popular Takahiko Satou raises eyebrows among their peers. When pushed to discover Satou's romantic preferences, Yoshida is taken aback by an unexpected kiss. Memories resurface, revealing Satou as a childhood acquaintance in need of protection. As their relationship deepens, Yoshida learns of Satou's darker nature and feelings. Embracing the role of Satou's 'favorite' leads to unforeseen challenges for Yoshida.