I Have a Cheat, Why am I Still in School? Let Me Fight Demons on the Frontlines!

[High-level martial arts + alien invasion + growth-oriented + sixth brother + lighthearted and abstract + ensemble cast] (Not invincible, please do not read if you dislike this!) (Leaves the academy within 100 chapters)

My name is Fang Bai, Fang Bai of Earth!

I don't know what possessed me, but when I woke up, I found myself transported to this world of high martial arts.

The world was more abstract than he had imagined.

A wall divides the Dragon Kingdom into two worlds!

Outside the wall, monsters roam freely. Humans possess power beyond the comprehension of civilization, and with this power, they keep the monster hordes outside the wall!

Inside the walls, thousands of lights shone, and ordinary people lived and worked in peace and contentment, protected like flowers in a greenhouse.

After a certain year, Fang Bai awakened the monster-killing rebate system, which allows him to become stronger by killing monsters!

From inside the wall to outside, wherever Fang Bai went, not a single demon survived!

Two and a half years later, when Fang Bai returned for the national examination, everyone discovered that he had already become a martial god!