It had only one volume and the uke was targeted by demons due to his energy so the seme is an assigned bodyguard to protect him. They need to share energies or something of that sort, and then they fall in love. The seme and uke both had darker coloured hair, I don't remember much but I've been looking for it for a while. Does someone know it?

It was a black and white bl manhwa about a doctor who breaks up with his trash doctor boyfriend and moves to the countryside and opens a small clinic and a younger guy falls for him and they eventually end up sleeping together and then dating and the ex returns but the uke has moved on
https://www.mangago.me/read-manga/farming_for_love/
Yes thank you