I love this type of concept. If anyone knows this type of similar manhwa or mangas can you...

Some supernatural/horror yaois i think could have similar vibes:
- black mirror
http://www.mangago.zone/read-manga/black_mirror/
- cradle of imae
http://www.mangago.zone/read-manga/imae_rayuan/
- fate makes no mistakes
http://www.mangago.zone/read-manga/fate_makes_no_mistakes/?jwKn
- ghost child
http://www.mangago.zone/read-manga/ghost_child/
- 90 Days for the Delicacy
http://www.mangago.zone/read-manga/90_days_for_the_delicacy/
- stigmata
http://www.mangago.zone/read-manga/stigmata_aikon/
- sura's lover (i dropped it but i think it got some similar vibe from what i can remember)
http://www.mangago.zone/read-manga/sura_s_lover/
- sun's blood (also dropped it but only bc i couldn't keep up with the update and i'll just read it all once it's finished)
http://www.mangago.zone/read-manga/sun_s_blood/
-bentham (haven't read it yet but it looks good)
http://www.mangago.zone/read-manga/ventham/
- heartless (really not for everyone, tw for gore and many other stuff, like this is pretty fucked up)
http://www.mangago.zone/read-manga/heartless/

Idk if this helps, i also love mangas like this and if anyone has other suggestions im down

Thank you so much ヾ(❀╹◡╹)ﾉ~