Shouldn't the Villain Die? Sin City Is About to Start

[Revenge + Darkness + Villain + Single Female Protagonist] Because his sister refused Jiang Tao's pursuit, his family was brutally murdered. Qin Feng was framed for killing his sister and was sentenced to life imprisonment. In prison, he was betrayed by his girlfriend Li Xin again and saw his girlfriend devote herself to Jiang Tao. Qin Feng collapsed, and the evil in his heart began to awaken. Reason? Love? Life? Why are you still here? Qin Feng only had one thought left, that is, to avenge his family. "If justice cannot be served, I will turn into evil, hold a butcher knife, and tear apart the darkness."