Why is my journey to the world of anime a strange tale of rules?

Transmigrated into an anime world, orphaned, rich and owning a house
Although the rules of the cat-themed novel forbid the protagonist from having a female character, this is definitely a slice-of-life harem story set in an anime world.
I imagine what follows will be a story of pandering to otaku, a wonderful tale of being surrounded by girls, right?
Welcome to the "Sacrifice Game," may you witness the end times amidst true terror.
Wait,
Isn't this script wrong?
Corpse whispers, crawling in the shadowy cave, paper figures asking for directions, a nighttime stroll through a ghostly village, eyes peering from under the bed...
Bizarre rules weave a bloody tapestry from which there is no escape; only by confronting the endless nightmare can one find a glimmer of hope.
So, if you're entangled with these terrifying things, can you give me a system, preferably one where you become powerful just by signing in?
As I was thinking this, I discovered that I had gained the ability to rewind time after death.
It's definitely a cheat code, but doesn't that mean I have to keep risking my life to make mistakes? I don't want to be like Subaru! Someone save me!
Then she turned around and saw Kaguya Shinomiya, Chika Fujiwara, Ichiri Goto, Miko Yotsuya, and other girls who were also trapped behind her.
Damn it, bring it on! How can I let a beautiful girl sacrifice herself in a place like this? I want to create a happy world without Gen Urobuchi and that old man from the riverbank!