Cardcaptor Sakura fan fiction, without separating Wolf Sakura, with Tomoyo as the heroine.

Question: What if I woke up one day and turned into a child?

Answer: Of course, it is to become a sunny and cheerful boy!

Xia Yu covered his eyes with one hand and smiled evilly, "I am the pinnacle of humanity, proud of the world. As long as I am Xia Yu, the sky will be there! I, Xia Yu! A magician hidden in the mortal world. In this magical world shrouded by the veil of daily life, I am one of the very few chosen ones who can glimpse the truth. I hold the sun and the moon in my hands and pluck the stars. There is no one like me in the world. Hahahahahaha!!!"

This book is also known as "Come to Hogwarts to Learn to Slay Gods" and "Chainsword + Boltgun: Times Have Changed, Wizard Master!"

In the dark 41st millennium, Bourne faced the Primarch Angron, who had ascended to the devil, in the Warp and was hit head-on by the Spinebreaker.

But his soul was neither polluted and assimilated by the Warp, nor did he return to the Golden Throne.

Bourne came to the world of Harry Potter.

ps: The content of this book is also friendly to readers who don't know Warhammer and Harry Potter. You can rest assured that the protagonist will not be tragic.