My Home Wi-Fi Connects to the Three Realms

While repairing the Wi-Fi in his dorm, university student Lu Jin unexpectedly transmigrates to an era of high martial arts.

In that world, a cataclysmic change had taken place decades earlier. All things evolved, humanity fell from the top of the food chain, and even the firearms and other weapons people once took pride in could not pierce the hide and bones of some demonic beasts.

And so humanity began its struggle to survive.