Ouroboros Record ~Circus of Oubeniel~ - Chapter 27: Marriage Blues

Leiyin accidentally crossed into the One Piece World, and accidentally obtained the Naruto System.

One day every human on the world suddenly receives a mail claiming to enact the World Salvation Project. Half in doubt Kurosaki Shion, a diligent university student and loner, follows the mail’s instructions, becoming one of a million Demon Kings governing his very own Domain in the new world.

*** This is a post-apocalyptic story containing many fantasy elements. It is a somewhat dark tale following Shion as he grows while aiming for the unification of the all too sudden new world. It has many game-elements bolstered by strategical thinking while at the same time providing funny moments and romantic encounters.

His Royal Highness the King of Han, who was afraid of the dark and ghosts and loved to cry, has always been the good baby of the princess.
Until one day, His Royal Highness the King of Han found a book in the bookstore…
Picture book?
Content tags:
Search keyword: Protagonist: King of Han, Princess of Han

- Description from novelbuddy

[Apocalypse] + [Rebirth] + [Hoarding Supplies] + [Surviving] + [Infinite Space] + [Dark Revenge & Non-Saintly]The world enters an Ice Age, ushering in an icy apocalypse where 95% of humanity perishes! In his past life, Zhang Yi was killed by those he had kindly helped, due to his benevolent nature. Reborn a month before the ice apocalypse, Zhang Yi awakens a spatial ability and begins to hoard supplies frenetically! Running out of supplies? He empties the warehouse of a super-mall worth billions! Uncomfortable living conditions? He constructs a super-secure dwelling comparable to a post-apocalyptic fortress! As the apocalypse arrives, while others freeze like dogs and would abandon anything for a bite to eat, Zhang Yi lives even more comfortably than before the apocalypse.Green Tea b**ch: “Zhang Yi, let me into your house, and I promise to be your girlfriend.”Rich Second Generation: “Zhang Yi, I’m willing to trade all my wealth for a meal at your place!”Beastly Neighbors: “Zhang Yi, you should share your supplies with us, don’t be so selfish!”……Watching these people who betrayed him in his past life, Zhang Yi lies comfortably in his safe house, living a carefree life as if in a paradise.Zhang Yi: “Why should I care whether you live or die? I would rather feed my things to the dogs than give them to you!”