Rebirth of the Villain: I Can No Longer Pretend to Be This Saint

"I, Jun Lin, the co-owner of all demons, died miserably. When I opened my eyes again, I became a soft-hearted sage named Lin Xuan. Now, the whole city is kneeling in front of me, begging me to use the 'principal of benevolence' to influence the demon king who massacred the city outside the city. . I looked at my hands that only knew how to write and play the piano, and then thought about the 'Great Demon-Slaying Fist' that I used to crush stars in my previous life... Forget it, let's just pretend. If I can't convert him, then sending him to death should be considered a kind of mercy?"