[Western Crossover] What Kind of Logic Is This, Where Two Negatives Make a Positive?

A is a villain.

He is powerful, elegant, and arrogant, and has little interest in restraining himself with conventional morality.

So it was only to be expected that he would be defeated by the righteous protagonists.

He thought that was the end of his fate, but who could have guessed...

"Atonement?" A repeated the word with amusement.

The being calling itself the System answered mechanically: [Yes. Your mission is to teach Bruce Wayne to become a truly good, virtuous, and admirable superhero. Once you complete the mission, you will be reborn.]

Bruce Wayne? That's a freebie!

A raised an eyebrow. He had seen Batman, after all. Even without anyone guiding him, Bruce would still follow the path laid out for him.

He happily agreed, and after transmigrating to another world, he successfully infiltrated the Wayne household and became the young master's tutor.

Only after he stopped eight-year-old Bruce from murdering his own parents did he finally realize how serious the problem was.

A looked at young Master Wayne, who was smiling like a little angel while keeping a gun trained steadily on him, and twitched his mouth.

This is freaking the Batman Who Laughs!

This story is also known as: "How I, a Villain, Saved You, a Born Evil"

Theme: Everything is for the sake of saving the world