I Let You Defeat the Devil, but I Didn't Let You Create the Demon Clan!

Lin Xiu is summoned by the goddess from another world, and the world is in crisis. He needs to help the goddess defeat the devil and save the world. After traveling to another world, Lin Xiu used so-called magic in new ways. "What age are you in, and you are still doing traditional magic?" "Eat one of my qigong blasts... Eat one of my magic waves!" "Gather the magic power into my eyes, evolve the Sharingan... Evolve the magic eye, sacrifice my teammates, and open the kaleidoscope magic eye!" "Magic power gathers in the Dantian to cast gold... Cast the magic elixir! From now on, I am a powerful elixir!" "Gathering magic power throughout my body, I will transform into a Super Saiyan... Super Demon state!" … Lin Xiu created a system without any fancy magic, but full of ultimate destruction. Practitioners of this system abandon spells and fancy magic elements, and focus the magic power on themselves! A few years later, the goddess who escaped from the prison of the origin found that the devil had been killed long ago. But in their place is a terrifying force that conquers thousands of planes. They are called - demons! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.