This manga is still updating, and you can find more chapters on Comix.
The premise of this story is very fun. The protagonist wakes up in the body of a noble woman, in the middle of the noble woman's funeral. She believes she isekai'd into the villainess of a romance fantasy novel. Everyone around her believes an eldritch abomination has possessed this young noble woman's corpse.
Its very entertaining so far
The main character is painfully oblivious at times. She (incorrectly) assumes she's been transmigrated into a romance fantasy novel. FL does sometimes just makes things up in her head and goes around as if they're fact, which gets kind of annoying.
I did think it was a fun read, but i wouldn't recommend it if you cant deal with an oblivious main character.
There's not much horror in this one. The worst thing that really happens is people getting murdered. Its more of a dark romance than a horror story. I never felt like the main character was in actual danger.
This one started out pretty good, but started to feel like it was dragging on for nothing.
The first floor boss being a teddy bear completely took me out of it for a minute. Very lame for a horror game setting.
I Was Possessed, but It Became a Ghost Story