MTL - My Girlfriend has a System - Chapter 30 Declaration of war

Karl, a young man stuck in a rough patch after losing his job and burning through almost all his savings, wandered through the cold, dark streets of Eldoria. On the damp, silent sidewalks, he stumbled upon something bizarre: an old gacha machine mysteriously appearing at every corner he turned, almost as if it was following him. Driven by a mix of curiosity and the overwhelming weirdness of the situation, Karl finally gave in and used his last bit of money on the machine. From the gacha ball, he pulled out a card with a barcode.Back in his cramped apartment, curiosity finally won over caution, and Karl scanned the barcode. To his shock, an app called “Common Sense Manipulation App” installed itself on his phone, claiming it could alter people's “common sense.”------Support Me By Gifts or Power Stones-----

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.

If it was me, I wouldn’t date a professional gamer. If I had that kind of patience, then I might as well use it to get into Tsinghua University or Beijing University.

- Description from Novelupdates

In countless worlds, mysterious doors appear, leading to an ordinary-looking convenience store. That is, until you see who’s inside.An immortal cultivator ponders over instant noodles flavor, an ancient demon sips a cola, and a primordial beast carefully holds a bag of potato chips. Beings who could shake the heavens stand quietly in line, waiting their turn.At the counter, a young man scans their purchases. No one knows where he came from, but all understand one thing. In this store, rules must be followed.Welcome to the Dimensional Convenience Store, where even the greatest existences must check the price before they buy.