Global Doomsday: I Got Flowing Blade-Like Flame Through Sign-In from the Start

After transmigrating eighteen years ago, his System finally awakens, just as the apocalypse descends upon the entire world!

Zombies, viruses, and mutated beasts tear through the sky in an instant and descend upon the earth.

"Congratulations, Host. Sign-in from the start to receive a Divine-grade Gift Pack."

"Congratulations, Host. You have obtained the Zanpakuto Ryujin Jakka."

All creation turns to ash: Ryujin Jakka!

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.