I Became the 1st Floor Boss of the Tower - Chapter 4: Crisis

Defeated in war, Princess Swan, who has been relentlessly bullied her whole life and crippled by her stepmother and sister, is sent to be the bride of the King of the Beasts—Gale Stormfront—as a prize for his victory.Swan thought that the savage beast would eat her. She will be chewed until there is nothing but bones left in her.But what if Gale wants her to be a remedy for his constant rut instead?This is a tale of a crippled and timid princess and a beast king who is fated to turn into a mindless animal, desperately searching for his fated mate to cure his curse .

As disaster was about to strike, a group of survivors transmigrated into a desolated world and were challenged to a game of survival. From terrifying acid rains, to endless natural disasters, the heavens burn while the earth scorches, radiation is rampant, and nobody is spared from the dangers of this hellscape. The only way one survives is by building a shelter and slowly upgrading it in hopes of surviving another day.

I cut from south to north,

I cut from white to black,

I will cut down the thousand mountains and the ten thousand waters,

I want the world to know who I am!

I am Gu Zhan,

Gu Zhan who wants the whole world to surrender!

- Description from novelbuddy

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.