The System Forces Me to Be a Good Person [Quick Travel]

The villain Jiang Cheng has done all the bad things in his life and used killing to prove his truth, but he can't take the last step and become an immortal. Instead, he breeds inner demons. The only way to eliminate inner demons is to go to thousands of small worlds and be a good person for ten lifetimes. Jiang Cheng: "???" Purpose: Be the best version of yourself