Ai is a widow who loses her husband Makoto in a traffic accident and is sad. After her funeral, her father, Toru, forces her to make a difficult decision. She says that now that she doesn't have any children, she has no reason to let Ai live with the Ozawa family. Toru looks at Ai, who is flustered, and makes a suggestion. Toru assumes that Ai is carrying a child with Makoto, and he says that if she becomes pregnant with his child, she will be able to keep the Ozawa family alive. And that night, Ai goes to her girlfriend Toru's room, determined to impregnate her while carrying her own conflicts...