My father remarried and my new mother, Sayuri, came to my parents' house. At the same time, I entered a university outside the prefecture, and ended up living alone at the boarding house without having much conversation with Sayuri-san. And when I returned to my hometown during the winter break, my parents and I decided to have a Christmas party together... After drinking, the two fell asleep under the kotatsu, and when I kissed the unprotected Sayuri's lips, I was struck by a pleasant sensation that melted my whole body.
