Sayonara Hatsukoi Mata Kita nande

After graduating from high school, his old crush, Nao, whom he hadn't met, suddenly appears in front of him. Osamu was impatient, thinking that he should be working in Tokyo, but he said, "I'm going to work here because of a job transfer, so will you let me stay until you decide where to live?" He remembers him from his high school days, and when he witnesses the grown-up Minami, his old feelings seem to rekindle...?!

(Source: Kadokawa, translated)