D+ Student: Dorm-Room Harem - Chapter 10: Lying to Pops - R

Four years after the Third Nightmare, something unexpected happens. A group of people find themselves in a strange theatre, which tells them to react to someone's story...?

Originally, the question Tang Xian was thinking about was whether he should be a hero for a second among this group of destructive bosses, or continue to pretend to be a boss.

Later he found out that if you pretend to be fake, it becomes real.

- Description from novelbuddy

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

I fell into a wannabe murim.But apparently martial arts is supposed to be difficult?Hm… Is it really that bad?