After rebirth, I rejected the rich yandere lady - Chapter 13 - Studying so as not to be kept by a rich woman!

A world that turned into a game in an instant.In the midst of it all, I awakened an EX-rank ability.Devouring all kinds of rewards and corrupting every female.Harem | System | Hypnosis | Apocalypse

Only I know the end of this world.

One day our MC finds himself stuck in the world of his favorite webnovel. What does he do to survive? It is a world struck by catastrophe and danger all around.

His edge? He knows the plot of the story to end. Because he was the sole reader that stuck with it. Read his story to see how he survives!

[Shelter System successfully bound to host!]

[Option One: City of Light, save the survivors in the apocalypse and become a glorious and benevolent savior.]

[Option Two: City of Darkness, humans who enter the City of Darkness can only become your slaves. And you, will be the devil ruling over the apocalypse.]

Sorry, I am no saint, I choose City of Darkness! From today onwards, I will be a villain!

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One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.