Responses
reminded me of this
https://www.mangago.me/read-manga/a_season_of_dusk/
Omg!! It is this!! And it's even completed!! Tysm
So there's a door that connects two different timelines. One of them (either the uke or seme discovers the door in his newly moved apartment and arrives in the other's timeline)
I think one timeline has a rural setting..
Not even sure if it's manhwa or manhua but pretty sure it wasn't a manga.
Only has few chapters and it wasn't updated for a long time.