For the reunion, I was returning to my hometown far away. I met up with my first love, Rio, who became my best friend and my best friend's wife at the park of memories, and headed to the venue. I felt nostalgic and lonely for Rio, who had become someone else's. Rio seems to have the same feelings, and after the first meeting, she invited me to her house when I was about to break up and confided in me that my best friend was having an affair. - With the excuse that she wants to save the grieving Rio, we put our lips on top of each other as if to regain those days.