On the day he invited his girlfriend, ``Hono,'' to his house for the first time, Naoto got into a fight with ``Hono'' over a trivial gaffe. - Naoto's father, who works as a writer at home, hears an argument and enters Naoto's room. - Then, his father noticed how cute Hono was, and invited her to his house while Naoto was away, on the pretext of offering advice. - Hono's body begins to heat up due to the effects of the medicine that his father puts in the tea. - The father takes the reluctant Hono into Naoto's room and forces him onto the bed...