Ever since my mother died before I even had time to remember, I've been living alone with my father. Every year, despite his busy schedule, he would take me on a trip to a hot spring, and such a trip alone with my father was a big annual event. However, this year's trip was different from usual... My father's new wife, Mana, was going with us. "Is it jealousy that he took my father away from me... or is it resentment towards my new mother...?" At that moment, I was filled with the desire to drive away my father's new wife...