Thorne Black, traveling through the world of Harry Potter, becomes the posthumous son of Regulus Black, and is also a congenital magical holy body of flesh and blood. He can become stronger by fusing the flesh and blood of powerful magical creatures!

then.........

"I once saw him pick a lucky audience member on the spot to receive a brand new heart the moment he was shot in the heart!"

"I once saw him, in a moment of extreme danger, rip open Quirrell, who was possessed by Voldemort, with just a wave of his hand!"

"I once saw him blatantly rip out the dragon's heart and lungs at the Triwizard Tournament, leaving me with a mess."

"I once saw him nearly devour the centaurs to extinction in the Forbidden Forest, where a vortex of flesh and blood appeared out of nowhere and he was extremely hungry!"

"I have seen..."

In the headmaster's office of Hogwarts, Dumbledore was wrapped in a wool blanket, holding a cup of hot milk in his hand and said with a look of despair on his face.

[Single female protagonist Hermione (yandere version), invincible, daily, only the Harry Potter world, a lot of personal settings.]

[I'm really a yandere, I don't like it if you mistakenly enter. I really can't write a description, so let's leave it at that.]

Humans are the protagonists of this world. They will never know their own potential, let alone what kind of existence they can give birth to.

When humans created the word fear, fear took on a physical form...

What? You're saying I'm the prophesied savior of the wizarding world? Are you sure? How about you take a look at my Ten Thousand Souls Banner before you speak? The story of an Eastern magic cultivator attending Hogwarts.