After three fulfilling years at her new school following her father's remarriage, Yuna was finally ready to graduate. As she walked home with friends after the ceremony, they were greeted by none other than her stepmother, Yuna. Reunited after so long, the two shared laughter and joyous embraces, celebrating their graduation together... but things quickly took an unexpected turn when Yuna became too tipsy from all the excitement. Unable to control his feelings any longer, our protagonist finds himself drawn back to this woman he has always admired - even though she is now married. It's time for him to take another step towards adulthood. Note that recording contents may vary depending on distribution method.