I get that everyone is kinda turned off by ML over possessiveness of the MC, but for me that's kinda understandable. Because for so many years he's been in love with our MC, but had no right to actually confront MC about who he's with or what he's doing with others, so ML must be constantly anxious as he can only observed from afar. Now that they're in a relationship, it's like he finally letting out all his suppressed feelings of anxiety, in the form of being extra nosy in MC relationship with others. Hope over time, ML will feel more secure and at ease, knowing the MC only had eyes for him.
I just wanna thanks that kind stranger who recommended me to this masterpiece of a manhwa. It's been a long time since I actually enjoys a story with soul switching trope. Kudos to tha author and the artist for making this gem
I'd also recommend "Grieving You" for something heartfelt ;)
("Kill the Lights" if you like drama, action, and ~spice~ and don't mind your ML being a bit of an obsessive red flag )