On a certain month and day in 2018, this message appeared in the minds of people all over the world: "Human, you are cute, I am World Tree 2613. You may not be able to accept the following words, but I also want to say that the world you live in will be destroyed. You, oh, I shouldn't say that this world is about to usher in a new era. Although it has nothing to do with you, if you don't want to disappear like this, then come and clear the 100th floor of World Tree 2613 if you want to live!"
Me! A good-for-nothing uncle who is nearly thirty years old is going to tear the world apart from the World Tree? Take it back!
World Tree: "It's World Tree 2613!"
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.