Kohta, the son, secretly loves his mother Yuu and harbors an illicit desire to touch her body. His feelings gradually become twisted, and one day he is overwhelmed by the urge: "I want my mother to drink my sperm." Desperate to make it happen, he starts working part-time at a restaurant to prepare for the act. He comes up with the idea of mixing his semen into curry rice to mask its smell and texture, carefully waiting for the perfect moment to execute his plan. When the time comes, Yuu smiles slyly as Kohta says, "I'll make you some curry today," and begins eating the semen-laced meal with apparent delight. Her reaction fuels Kohta's desire even further, driving the story into deeper taboo territory.