I left my parents' home to go to university, but now that I've got a job, I've returned home for the first time in about three years. When I went to the convenience store where I used to work part-time, I found my ex-colleague, Ms. Matsumoto, who I had a crush on back then, still working there. She seemed happy to see me again after such a long time, so we decided to go out for drinks... "I'm going to marry my current boyfriend soon." I was so upset by her unexpected update that I started to lose my Kokoro of reason.