Relying on Luck to Become a Demon King

Yun You fights against the king, and accidentally travels to the world of immortality. He discovers that this body is also called Yun You. He has a system, joins the Demon Sect, becomes the Demon Sect's genius, avenges his family, and challenges the right way. Yun You is not completely decisive in killing, but he is not a virgin, and is semi-invincible. There should be three female protagonists, but it is not complete. Inspiration for the follow-up, please support me for the first time. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.