All high school freshman Airi Hoshina ever wanted was to someday live in a cozy home with a loving husband, and find joy in the little things in life. As a result, she makes it her daily mission to get to school on time because school legend has it that the longer one's non-tardy streak is, the better boyfriend one will find. But just when her daily routine is working like clockwork, an occurrence of fairytale proportions threatens to disrupt her grand plan.

While on a seaside field trip, the little boy Aram and Airi find themselves in the middle of a blackout at a public bath. Frazzled to no end, Airi drags Aram inside a closet, but someone walks in on them. Will Aram’s secret be blown so soon? Meanwhile, Aram’s former fiancée Mariabel shows up at school. What evil schemes does she have in store for Aram and Airi?