College student Kenshi is deeply attracted to his classmate Ayumi, who also has feelings for him. The two become close while studying together at home and gradually develop romantic feelings, yet neither can bring themselves to take the final step. Ayumi discovers that her former high school teacher, whom she once admired, is actually Kenshi's stepfather, Ryo—shocking her and stirring complicated emotions. As she attempts to seriously discuss their relationship with Kenshi, the conversation leads nowhere, leaving their future uncertain.