After Taking the Protagonist's Place, the Villain-Reversal System Finally Arrived?

After accidentally transmigrating into a game world, the protagonist was living the dream as the hero and was about to achieve a perfect ending. Then a villainous comeback System appeared.

It had also arrived twenty years early. He was only eighteen now.

[At thirty-eight, you will be abandoned by everyone. Your true identity is the son of a villainous family, but you were switched at birth with a child from the hero's family...]

Half skeptical, he decided to test it out. To his surprise, it was true... and he was kicked out ahead of schedule.

[Your heroine ex-wife will keep mocking you, and you will resolve to cut ties once and for all...]

He looked at the heroine, whose affection for him was maxed out... and stood there completely baffled.

He nearly ended up being dragged off and locked in a basement.

[At thirty-eight, you will meet awakened witches who have despaired of the world. Amid mutual suspicion, you will form a villain alliance... Its purpose is to take revenge on those who betrayed and hurt you, and even on the world itself, and to establish true peace.]

Looking at the innocent little girls around him and the kind, considerate young women, he couldn't help letting out a sigh...

When all the missions were complete:

[Congratulations, Host, you have completed the missions. As a villain, you established true peace. The world lies under your shadow, and no one will ever bind you again. You severed every bond, since you killed everyone who stood in your way, including those who loved you.]

"Yeah, yeah. You're the best, System."

At that moment, he was surrounded by girls on both sides, their sweet words ringing in his ears.

"Mr. Great Villain, are you saving the world again today?"