I remember that it was a place of constant winter, it was heavily snowing and the people of that land had not seen spring in a long time. A guy found a man in the snow and rescued him not knowing that the man he saved was spring himself. Something like that, it's a bit blurry in my mind rn.
maybe this? sorry if it's not it https://www.mangago.me/read-manga/mauri_to_ryuu/mi/mi_chapter-3.1/1/
The rating is so low when chap1 is not even here yet wth. That being said, I checked the raws and it starts with rape so I'm out, stay safe y'all