Sakanai Hana ni Mizuyari

Hiroshi Asamizu is 27 years old. When he moves into a new apartment for a new job, his neighbor turns out to be his first love from high school - Takehito Sakuraba. Hiroshi doesn't want to see Sakuraba again. He doesn't want to be in love anymore. He doesn't want to be disturbed. That was what he thought, but he can't help looking at him, and his heart can't stop pounding. Can you stop your heart from being attracted to someone?

(Source: Libre, translated)

Note: Includes two extra chapters.