deep-dark-fears is a blog consisting entirely of comics, not all of them ‘horror.’ A lot of it is about the silly little irrational fears we have, unrealistic as they may be I’m sure we’re all aware of how scary they can be.
Fetish is a manga consisting of short stories, very eerie with some blood but nothing excessive. Definitely some triggers to look out for - domestic abuse, incest, pregnancy + childbirth, stalking.
Ghost In Masung Tunnel a manhwa about some freaky paranormal shit going down on what should be a regular train ride. Warnings for gore, body horror, and there is a jump scare / screamer part way through.
Growing Old is a short manga about a rapidly ageing infant. I know, it sounds silly but it’s pretty unnerving. Warning for body horror, but I think that’s about it.
Kijin Gahou is another manga consisting of short stories, this one I definitely wouldn’t suggest for those with a weaker stomach because it’s pretty intense and fucked up. Warnings for pregnancy, abortion, self harm, suicide, bugs, internal parasites, necrophilia, bestiality, general animal cruelty, rape, stalking, and pretty much anything else you can think of.
Out with a bang this one is by a tumblr user. Very interesting, warnings for gore, child death, and suicide.
Shiranui Kitanroku yet another manga consisting of short stories, but these are all connected to each other through the main character. It’s not too serious, I don’t think, but it’s pretty good. A lot of supernatural / paranormal elements.
The Tiger in the Hills an amazing manhwa. Warning for blood and gore, but not much else.