Writing a Diary at Hogwarts, I Broke the Witch

Su Chen transmigrates to the Harry Potter world and successfully awakens a diary System.

He has no intention of getting involved in conflicts. He just wants to coast, slack off, and get stronger along the way.

Writing diary entries and making a few snarky remarks earns him an endless supply of magic spells, potion recipes, and magical items.

But gradually, Su Chen realizes something is wrong!

Why is Hermione standing in front of him, inviting him to help take down Voldemort?

She's even offering him a deal that would... Wait a minute, all I care about is magic.

Ginny: "Big brother, will you-know-who get mad if I use your wand?~~~"

Luna: "Su Chen, don't leave after class. I want to study magical creatures with you."

Cho Chang: "Oh my God~~~ Now that's a real man!"

This novel and its characters are entirely fictional. Any similarities are coincidental. Do not imitate.