Descent of the Demon God - Chapter 237: Side Story (4)

There is no master god, no system, no exchange, and some are just source codes that are fused in the mind to open up the world, not to be forced or suppressed, but to constantly go through in order to become powerful Look at my infinitely powerful source code …

- Description from uukanshu

In a world where humanity is defined by Classes, Classes are everything, and when you get a low rank class you're stuck with it until the very end. Axel awakened the supposedly lowest of the low rank class, he was mocked for it and ostracized but little did any one know, that this was only the humble beginning of a boy that could steal classes and evolve them. This strange Class that Axel awakened set him on a path to possibly becoming the strongest in all the dimensions.

The age of darkness has arrived.

Shaymon, the man who has achieved the apex of dark magic, is framed as being a Demon King and is killed.