The Tojo family became a single-parent household with one parent and one child after the mother passed away. The father, working tirelessly for his only daughter, saw her grow up healthy and serious, resembling her mother in appearance. However, Natsu, the daughter, gradually developed feelings for her father that went beyond a parent-child relationship. Suppressing these emotions, she would engage in solitary activities to comfort herself each day. But one night, when her father broached the topic of remarriage, Natsu's pent-up desires finally exploded, despite her usual restraint in expressing her willfulness.
