Toaru Majutsu no Index - Volume 12, Chapter 3: Misaka and Misaka’s younger sister. Sister_and_Sisters.

Jin Yeong was just another office worker—forgettable, unremarkable, and stuck in a life that never went anywhere. He wasn’t strong. He wasn’t talented. In a world of ambition, he was just… there.Then, the sky cracked open.A voice echoed across the world, mocking humanity’s weakness. A system was given. A chance to survive.People awakened powerful abilities—fire, lightning, super strength. Jin got this:[Limitless Weapon Mastery]“Any weapon you wield is used at its maximum potential.”No fire. No magic. No enhancements. Just a simple skill?But soon he and the world will learn a simple truth:It’s not about what you wield. It’s about how you wield it.

Under everyone's gaze, her pregnant sister came to force a marriage, making her the butt of the joke, after being cheated on.When she was at her wit's end, she met him ——Jun Mochan, the business tycoon.He said: “Marry me, I won't betray you.”In order to shut off the wagging tongues and avoid becoming a bargaining chip in a family alliance,She said: “Okay”But, wasn't it agreed that it would be a fake marriage?He loves her deeply. The whole world knows it, only she doesn't.

When I woke up after being transported to another world, I am suddenly the antagonist? This script is wrong! I stole the other guy’s girl! I also have a super strong big sister! This script is even more wrong! There’s even an Overgod Space, along with the infinite worlds? I must be dreaming! Wu Ming calmly maintains his neutral expression and journeys ever onwards.

- Description from Novelupdates

He had been reincarnated, he thought that he didn't cheat until suddenly he noticed someone invite him on a group chat.[Do you wish to join Dimensional Chat Group?]MC: "Accept!"---------------------------------------------Cover not mine, it's from anime Yosuga no Sora---------------------------------------------https://www.patreon.com/akikan40Maybe I'll be full of energy to write your favorite fanfic.