Teacher Honoka Furukawa is the new teacher at a continuing education center in a small district on the outskirts of Tokyo. Being new, she is immediately assigned the challenging task of working with Tuan, a delinquent student who has not attended school for a long time. It turns out that Tuan comes from a slum, which makes his family situation quite complicated. It is known that Tuan's family consists of his grandfather, his father, and Tuan living together, and this family is very... fond of women. Stepping into a place like this, will Furukawa return unscathed? What are the secrets behind Furukawa's personality and Tuan's family? Will Tuan return to school with his teacher or join the delinquents in the city to search for the elusive leaves...?