Ren Zha Fanpai Zijiu Xitong

Synopsis

With unparalleled strength, a harem in the hundreds, and rulership of both the human and demon realms, Luo Binghe is a typical male lead for the stallion novel Proud Immortal Demon Way (PIDW). Like every protagonist, he has a tragic past: suffering under the thumb of his loathsome shizun, the scum villain Shen Qingqiu. However, despite its great world-building and setup, PIDW eventually went off the rails, abandoning plotlines left and right, and now focusing exclusively on gratuitous sex. This is the very trash-tier web novel that a young millennial named Shen Yuan curses as he dies, swearing that even he could write a better story. That moment is when the "System" initiates, and Shen Yuan awakens in the body of Shen Qingqiu. His mission? Turn this piece of subpar fiction into a grade-A masterpiece. Constrained by a System that will punish him for even being slightly out of character, Shen Yuan must avoid Shen Qingqiu's fate of becoming a human stick—and step one is to hug the protagonist's thigh! (Source: MyAnimeList)