I, the Eldest Brother of the Demon Sect, Can Only Become Stronger by Destroying Evil.

I, Tang Long, am wearing it! The original owner is a big boss of the Demon Sect, full of evil, murderous, and a great evil man who kills his master! However... Nature plays tricks on people! Tang Long unexpectedly obtained the evil-killing system, and he could become stronger by killing evil people. In the den of thieves, he looked around blankly and murmured, "They are going to kill me until I become a lonely man!" .... Many years later, when Tang Long stood on the top of the universe, overlooking all races. He was pleased to find that the Demon Ancestor was playing in the river, the Ghost King was farming in the fields, the Demon Lord was helping the old lady cross the road, and the Star Lords of all walks of life were actually playing hide and seek... So good! The universe is peaceful and there are no evil people to kill!