Khemjira

Besides both being supernatural horror romances, the production and the atmosphere of Khemjira remind me of Shadow. Of course, there’s only a few episodes out and the MCs have limited interactions but they’re filled with chemistry. I’m genuinely impressed so far and definitely see myself getting hooked on this series as I did with Shadow. That being said, I normally don’t leave recommendations but I was super shocked no one had suggested this yet. Anyways, happy watching <3

Although they deal with spirits and death, I found both series to be very good, even though I preferred Khemjira overall.

Both are Thai dramas with a horror/mystery theme. Happy Ending is psychological/modern day horror (still unclear if it would be a BL) while Khemjira is a BL drama that is supernatural/ghost theme horror.

Both have ghosts and folk law as well as traditional Thai aspects.
Both have supernatural events.
Both are about rebirth and have characters that are reborn.

Both are BL dramas in which the leads were a M/F couple in the past, and the FL has now reincarnated into a male.

Past live problems comes to hunt you in your present live.
Thai folklore involved in supernatural story.
Forbidden love wher one is curse to die.

Different shows but if you like KengNamping then khemjira was their first show and magic lover their second as a couple pairing.

Both are supernatural themed BL dramas that are produced by the same company Domundi. The main character meets his love interest that has a connection to his previous life.