In a boys' school, the tough and charismatic delinquent Kou is not only a childhood friend but also the best friend of the small yet attractive delinquent Maki. When Maki reveals he will be leaving after graduation to work in Tokyo, Kou decides to express his feelings for his long-time companion. As their bond deepens and they acknowledge their mutual affection, Kou surprises Maki by proposing marriage to him. How will Maki respond to this unexpected turn of events?