Momose Akira no Hatsukoi Hatan-chuu.

Hajime Kugayama, a boy living in the countryside, has returned to where he began: his former classmate Akira Momose, on whom he used to have a crush. Just as he is resigned to enjoying a bittersweet youth watching her from afar... Akira makes an unexpected approach. And therein he finds a "fate" that is more than he could have imagined.

https://www.cmoa.jp/title/309305/