After Being Eaten by a Monster, the School Beauty Took Me to the Death Archives

Brother, tell me, what is the difference between humans and monsters? Three~two~one~ Time's up! The answer is, there is no difference. Those who can restrain themselves are the so-called "people". If you can't control yourself, look there, the six restricted areas outside the lifeline, those are all inside~ Oh, of course, brother, you are different. You are the pure white angel, you are the evil ghost of hell, you are the leader of the human race, and you are the tyrant of the abyss. Whether you are a human, a monster, or... Anything above that, it all depends on you and only you. And I, your sister, from now on will bring down the eternal night equally for the light and darkness in this world. As long as you are willing, brother, everything under the night sky will rest in peace.