Slandered by the Supernatural

[No harem + no brainless decisions + no wish fulfillment + no holier-than-thou heroine + no System] I'm a high school student who's a little better than average academically. One day, a classmate suddenly suggests we try the Six-Pointed Star game that's been going around online. We do something stupid and draw a six-pointed star on our hands, and the endless abyss slowly turns its gaze on us.

Only after I plunged into it did I feel regret and despair.

I was wrong. I really was wrong. I shouldn't have done something so stupid. Can anyone save me?

No, that's not what I meant! Can somebody kill me? Someone, please kill me!

It's too late. It's all too late. No one can kill me now... Hahahahaha, it's all too late!

You think I'm your toy? Hahaha, too bad for you. This toy bites back!

A madman? A liar? A genius? None of those. I am the [Tyrant].

You still refuse to submit? None of you are willing to bow down? Fine, fine. I have just one question:

“Can you eat your own heart?”

[The first 20 chapters cover the protagonist's adjustment period. He matures later on. The story only borrows the six-pointed star and immortality concepts, and does not plagiarize the plot in any way. Please don't skip chapters, as the book is full of foreshadowing, and skipping will affect your reading experience.]