As Slytherin's Top Student, I Fused with a Forbidden Curse from the Start

After transmigrating into the world of Harry Potter, he becomes Casper Lestrange, heir to an ancient Pure-blood family.

Yes, the same family as Bellatrix, the Death Eater madwoman.

At the Sorting Ceremony, the Sorting Hat shouts, “Gryffindor!”

Yet under the expectant gaze of the entire hall, Casper smiles at the Sorting Hat and says, “No, I think Slytherin suits me better.”

The Sorting Hat: “???”

Dumbledore: “???”

The entire school: “???”

From that day on, everything at Hogwarts changes completely.

While Harry is still worrying about the Quidditch Match, Casper has already mastered Wandless Magic.

While Hermione is still buried in books at the library, Casper publishes a paper titled “On the Application of Transfiguration to Cross-Species Genetic Compilation,” shocking the Wizarding World.

While Ron is still jealous of Harry, Casper has already bought half the shops in Diagon Alley and become the youngest tycoon in the Wizarding World.

He combines the Levitation Charm and the Severing Charm to create “sword-flying”; he improves the Patronus Charm to summon mythical creatures from the Classic of Mountains and Seas; he even recreates the internet with magic...

Dumbledore: “I used to think Harry was The Chosen One. Now it seems Casper is the god of magic.”

Voldemort: “I’m the Dark Lord! ...Wait, Casper, put away that ‘two-dimensional foil’ spell. Let’s talk this out!”