Reaper's Resurgence: A System Reset - Chapter 80B3 | - A New Weapon

Reincarnation.Or rather... transmigration.Whatever it is, it wasn't something i ever thought i would be a victim of.But here i was...... a villain in the very game i died playing.But... as though that wasn't enough.I am not even going to make it past the first arc.Scratch that.The very first day in the academy...... that's the day i die.(Earlier chaps will involve info drop, the true story starts from the Academy Arc)

She shouldn’t have got drunk, so she wouldn’t have court the troubles.
She slept with a handsome man and would be sent to the police?
Oh, my sweet Jesus…
“So you just ran away like nothing happened after you slept with me?”
“Old jerk! Even if I had the initiative, it was you who took advantage of me!”
As a saying goes, the more spoiled a president gets, the more likely he becomes a scumbag.
An adorable ‘wildcat’ vs. a scheming frenemy.
This was a love rivalry between a modern Cinderella and a Big Boss.
As time flew, the world was like a fleeting show.
When they met again after several years of separation, he held her hand tightly and swore that he would never give her any chance to leave him again!
Finally, he asked her to marry him and pampered his cute wifey with his endless love.

- Description from Novelupdates

This is an Isekai styled story, written from the point of view of the protagonist.

Discover the secret of the new, unknown world with Peter, as he sets his first steps in an empty, ruined city. Meet new people from all around the globe. Fight, laugh, and cry.

“Look at him,” someone snickered from a few rows over. “Smells like he sleeps in a dumpster.”“Probably does,” another voice added, louder this time. Nox just stared at his textbook, the words blurring. He had heard it all before.Then, Mark, one of the main reasons his life was a living hell, swaggered past his desk. Mark always had a smirk on his face. “Oops,” he said, not even trying to sound accidental, as a full cup of bright orange juice tipped over, splashing all down the front of Nox's already ruined shirt. The cold liquid soaked through instantly. Laughter erupted around the room. It was loud, clear, and mocking. Nox slowly looked up. His eyes landed on Ms. Joy, who was watching the whole thing. She had seen Mark deliberately pour the juice on him. He raised his hand, a small, tired gesture. “Ms. Joy,” he said, his voice flat. “He just poured juice on me. Are you just going to ignore it? Again?.” Ms. Joy looked at him, then at Mark, who was now theatrically wiping his hands. A small smile played on her lips. Then she chuckled. Just a little airy laugh.“Oh, Nox, don't be so dramatic. Boys will be boys, right Mark?” Mark puffed out his chest. “Yeah, Ms. Joy. He's just sensitive.” The class laughed even harder at that. Ms. Joy joined in, her laughter ringing out with theirs. Hearing them all, hearing her laugh, something in him finally snapped. It wasn't a loud break, more like a quiet, final click. He realized it then, with a cold, hard clarity. No one was coming to save him. No teachers, no police, no parents he never had. No one cared. If he wanted this to stop, he would have to be the one to stop it. He was the only one who could.His face remained blank, but his mind was suddenly very clear. He reached down slowly, his hand going into his worn-out school bag. The laughter died down a little as a few students noticed his deliberate movement, a strange stillness about him. He pulled out a gun.The classroom went silent. Utterly, completely silent. Mark's smirk vanished, replaced by wide, terrified eyes. Even Ms. Joy stopped laughing, her face paling. “What… Nox, what are you doing?” she stammered, her voice suddenly shaky. He didn't answer. He looked around at their faces, one by one. Fear. He saw fear now. Good. He was ready. He was going to make them all pay. He was going to end it, all of it.Just as he was about to raise the gun properly, a bright blue screen appeared right in front of his face. It was translucent, and only he seemed to see it. [Congratulations! You have met the requirements!] [1st Player Chosen!] [You have won the System!]