So I saw this edit on ig and I'm gonna type it down before I forget it because my stupid ass refreshed it away again waaaah
It's an isekai (I assume) manhwa
The uke (in present time) dreams about his past life when he was a slave (?) to the seme, so he's scared of the seme when he wakes up
In their past lives they both had long hair, they both kinda looked like the seme from "cold-blooded beast"
The seme was wearing all black and he jumped down of a black horse and shot uke with an arrow
from the description it reminded me of "see you, my king", i remember that at the beginning the MC dreamed about ML and there a this part of ML shooting at MC when MC traveled through time and went looking for ML. i hope i would helped ^^'
https://www.mangago.zone/read-manga/see_you_my_king/
this one maybe? https://www.mangago.zone/read-manga/a_trace_of_margins/
Good boy MJ, good boy