Hana and Kiyo are childhood friends who are now university students. They have been together since nursery school and their houses are even next door to each other. It was natural for Hana to be with Kiyo anytime and anywhere without any feelings of discomfort. However, one day, Hana noticed that Kiyo was popular with girls and with that, their relationship suddenly starts to change. (Source: Renta JP, edited and translated)