With Shota's father away on a long business trip, the responsibility of household chores and personal care falls to Hana, a kind and meticulous housekeeper. Possessing soft, large breasts and a voluptuous, well-rounded figure that perfectly matches Shota's preferences, her presence makes Shota's heart race with excitement. The days they spend together under one roof bring an unusual warmth and familiarity into his life. Before long, Shota begins plotting a naughty prank on Hana, and their relationship gradually grows more intimate. This story unfolds with erotic tension simmering beneath the surface of everyday life.