OnyxTheHedgehog:
I’ve been looking for a good horror BL (2 of my favourite genres) but they’re very limited unfortunately T_T
Other than the others mentioned the only other ones I know but I don't find them scary are Hidden Love and Ghost Host, Ghost House (this one has a lovely scene under the stars, on a chair, very lovely couple I must say :) Funny how my memory is bad with events in past series but yet still remember these scenes very vividly lol.
I do watch horror but for BLs I don't find them scary. Movies like the Nun and the Conjuring have set my standards too high.
If you love blood and action like I do especially in assassin movies, these are some female Korean assassin movies I watched this week (No BL elements though)
Kill Boksoon (GL side story nothing central though)
The Villainess
Going by these responses I think it is safe to hold off on watching Two Worlds until it finishes airing.