My son is about to get a job and will be leaving home soon. While Yui is happy that her son, who she raised single-handedly, has grown up well, she also feels lonely. My child, whom I have been caring for, ends up out of my reach... On their last night together, Yui can't control her emotions and crawls into her son's futon. Her son felt the same way. Forbidden feelings that cross the unforgivable line