When I was young, my parents divorced, and I’ve been living at my father’s place since going to university. However, there was a source of worry for me: my father’s lover, Sumire. One day, my father asked me to take photos of Sumire, who works at the cabaret he manages, for promotional materials. As we were taking the photos, Sumire got excited and kissed me. Despite being inexperienced, I hesitantly accepted her guidance.