Hey so not really horror but more thrill
It's about a group of student that couldn't get out of a building after an earthquake and it was dark at first they all had phones and food but the rescue took too long , the twist here is after the they r rescued one of them was recording and the police found it someone was playing two people voice or another voice whispering in the audio its really disturbing and creepy the thing is I don't remember the title and I really want to know who was it
oh boy.. august 9th I will eat you is genuinely fucking terrifying with its concept: aka mc has had stalkers all his life who’re all in twisted love with him and now he’s being hunted down once again ‘by’ more of those same stalkers who’re all fucked up literal monsters while one of the stalkers saved his ass at the start and has promised to protect him from the other stalkers so they can be together forever
here you go if you’re willing to read it:
https://www.mangago.zone/read-manga/hachigatsu_kokonoka_boku_wa_kimi_ni_kuwareru/

A horror manhwa that has like a cute artstyle but when they draw the horror part of the story is genuinely scary and disturbing. Something like Ghost Romance.