Reader - Chapter 1: Bookworm

Jin-Ho Kang was just another B-rank Hunter—one of countless warriors struggling to rise in a world dominated by monsters and guild politics. When an A-rank dungeon scouting mission goes horribly wrong, he and his team are slaughtered. He should have died.But instead of death, he awakens in an abyss beyond mortal comprehension. A voice older than time itself speaks to him, a decree is made, and the truth is revealed—he is no longer human. He has inherited a power that was never meant to be his.The world forgot him.But he has returned.As a Sovereign.As the Monarch of Shadows.And as the boundaries between life and death begin to blur, the world will soon realize…The true King has awakened.

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

Kay didn't have the best life. Most of it was fairly standard, but his past was marred by a tragedy that changed his entire world. Years later he had managed to mostly rebuild his life, and had started making something of himself.

And then he woke up in a different world. A world of fantasy and [Classes], a world much more dangerous than the one he'd been born in.

The new world he's been dumped into doesn't hold anyone's hand. Even with the bonuses that being an Outworlder brings won't keep him perfectly safe. One mistake could kill him in an instant.

But maybe, with a little bit of help, he could start over once more, and start to make something of himself again. And maybe, just maybe, that something he makes himself into could be amazing. And bloody.

******

As I'm leaning right now there probably will be sexual content later on, but I might change my mind later. There definitely will be death, gore, violence, and blood. Lots and lots of blood.

I changed my mind. No adult stuff in this story.

Qin Wuyue, a pseudo-house on Earth, traveled to the world of Hokage and awakened the legendary Goldfinger. The system is very violent and works flawlessly. As long as you complete the optional tasks, you can directly obtain super-powerful items of cultivation, abilities, ninjutsu and other planes. But Wuyue couldn’t be happy at all, and even had the idea of ​​wanting to die with this damn scumbag.

“You pervert wearing my camisole again” a certain elder sister roared loudly. “Take it, this is the fat time I just changed in the morning.” A certain senior said expressionlessly.

“Jun Wuyue, it’s time to collect material again, take off your pants.” A certain wife next door lit up. “If you bastard dare to steal again, I will break your third leg.” A certain beautiful master shook his fist with a cold expression. “I’m really not a pervert, I’m being forced, you believe me” Wuyue burst into tears, looking up at the sky at a forty-five degree angle

- Description from novelbuddy