It's Hard to Train a Sickly Apprentice

[Qiangqiang|Shuangjie] The villain's yandere apprentice vs. The crazy master who wears books Shen Yan is the eldest son of the family. He became the president of the company through his own efforts and means. People in City A saw him as timid, but he was stabbed to death on the bed by his father's adopted brother. When he woke up, he became the leader of the Ruthless Cult. There was also a gangster who claimed to be the system and asked him to attack his villain's yandere apprentice! Shen Mingxuan is the disciple he picked up, and his true identity is the illegitimate son of the leader of the Demon Cult. Ana Shen was about to refuse, but was forced to close her eyes by a bright light. When she opened them again, everything around her changed. Shen Mingxuan was tied to the bed by him, with four big words written on his face, you are dead! —— Tattoo plot/counterattack plot