Yuudai Saito, a 27-year-old single corporate drone with dead fish eyes, returns to his apartment after another day of overtime, with nothing but a convenience store bento for dinner. What am I living for? He spends his days pondering such meaningless questions, having given up on love and marriage, appearing like any other twisted man in today’s era. And then, a few months ago, a woman moved into the apartment next to his. Yes. It was none other than a high school classmate who had embarrassed him with a prank-like false confession. However, that was a decade ago, and it seems she doesn’t even remember doing it, possibly because I was just a background character to her, and we weren’t exactly close back then. It’s just a stranger moving in next door. That’s all I thought… This story is a romantic comedy… That simply depicts these two, who meet again by chance after ten years, living their daily lives as ordinary neighbours.