50 years ago, rifts started appearing. Monster would come out of them and attack civilians. It seemed hopeless until Arcanas came. They are weapons with mythological spirits or backgrounds. There are many different races living in the world now. That's the info I got from the internet. I don't even know where I am. My goal in this life is to live out my life to the fullest and survive... By the way, am I supposed to have a yandere harem? This is a spin-off from the story "The MOB character Shouldn't have a Yandere harem?!" Please go check out the book from UnknownFate25. He is an amazing writer.