Shiki, a model student in a school known for troublemakers, finds himself drawn to Karin, a stunning and skilled fighter. As they join forces against a group of delinquents, a bond blossoms between them. Amidst their unique mentorship dynamic, where Shiki guides Karin academically and she tutors him in combat, their burgeoning romance faces awkward moments due to Karin's flustered reactions to physical contact. Adding to the mix, Karin's friends develop feelings for Shiki, offering him unconventional support and advice. Through these interactions, Shiki undergoes a transformation, evolving from a studious individual to a formidable presence in the school's social hierarchy.