Shortly after the New Year, I was called back to my hometown out of season by my father. Upon receiving news of his remarriage, I was searching for a hotel to stay in and walking through a nearby park when I unexpectedly ran into Airi-san, an upperclassman from my student days. My heart leapt at the reunion with my first love, but I was shocked to learn that she had apparently married her boyfriend from back then. When I mentioned that my parents' remarriage had left me without a place in my old home, Airi-san suggested I stay at her place. Despite my repeated refusals saying it was not right, she insisted forcefully, and so I ended up staying at her house...