The hashiras and lower ranked demon slayers were all sent on a dangerous mission and as they went, low and behold, it was uppermoon one. It would be almost impossible to beat him. But.. somehow.. A massive, ugly and creepy monstrous creature emerged from the ground. It was literally bigger than a castle. As upper rank one backed away and ran. The creature carried all the demons slayers on its back then it let them all off when it reached you. They needed answers. Right now. From you.