Invincibility Starts from Slaying Demons and Repaying Loans

Take a loan to practice and make progress in advance! [Decisive killing, mature, no female protagonist] The world is in chaos with demons, evil spirits are everywhere, and people's hearts are sinking. From "Wan Xiang Jue" to "Supernatural Power: Wan Xiang Sheng", from "Tong Yang Fist" to "Secret Technique: Da Tong Yang Fist!" Xu Qi, who was a good student in his previous life, just wanted to practice well with his good talent, but he accidentally got into trouble with martial arts. Unintentionally discovering that he could repay the loan by killing demons, he began to repay the loan with difficulty. But unexpectedly, he accidentally became infected with a more terrifying magical loan. He had no choice but to let his enemies repay the loan for him. "It's terrible. After fighting with this person, I have made no progress in my cultivation?" Looking at the skill loan that was about to expire, Xu Qi held the long knife in his hand and looked at the endless evil spirits and demons peeping in the Tianmen. "Come on, you all can come and practice together!" Gongfa loan! Fusion loan! Magic loan! [The system is at your service wholeheartedly! This book is also called "To practice martial arts with a loan, will you let someone else pay it back?" "He just wants a vacation. What's wrong with him?"