The Villain's Great Whitewashing Methods (edited MTL) [Dropped]

!!NOT MY STORY!! I am just machine translating and editing it. All credit goes to the original author, 赋予 (Fu Yu)
Beta reader: @unluckygingko

Original title: 反派洗白大法
Also known as: The Great Methods of a Whitewashing Villain, Please No Cure For Me

(There is also a manhua adaptation of this novel! It uses the same title as the novel.)

Synopsis:

[The conscientious villain was blackened by x's stabbing]
Jia Yang is a villain. His task is to become the hero's sharpening stone and let the hero become a suitable hero.
However, the male protagonists he met all had problems, and they were not motivated at all.
So Jia Yang changed his strategy. He worked hard to be brothers with the male protagonist, and after gaining the male protagonist's trust and affection, he instantly changed his face to betray him, stab him in the back, frame him and so on.
He did all the evil things a villain does to the male protagonist.
Sure enough, the male protagonist has become a powerful and very qualified male protagonist.
Jia Yang is very satisfied, and the male protagonist can't personally get revenge on him. After completing the villain's task, he can go to the next world.
Until... After Jia Yang completed all the tasks, the System said to him: 【You need to return to each previous task world and survive for ten years, and the task will not be completed unless you survive. 】
Jia Yang was silent: 【You say it again. 】
System: 【You need to return to all previous mission worlds to survive for ten years. 】
Jia Yang: 【&#￥#￥#! 】