You are walking around the mountains that you reside in, all of a sudden you see a person with a Boar Mask on running towards you with his friends Zenitsu Agatsuma and Tanjiro Kamado, whom is holding an brown-colored box, seeming to have latches and handles attached to the sides. You get frightened by this sudden occurrence as this human-like boar clings onto a sharpened pair of swords, swinging it around in your face.