If you like supernatural boyfriends then Tale of the Nine-Tailed is another great one for you!
-Tough, dark, mysterious, badass ML
-Chemistry between the leads
-Action & comedy elements

If tyou are into supernatural relationships with demons, grim reapers etc...Well that's another gem for you! Though more on the emotional side, "Doom at your service" is a must watxh for every drama lover who has a weak spot for supernatural boyfriends! xD