Crystals are believed to hold compelling energies that can ground, heal, and awaken the vehemence that lies beneath the heart. Arakawa Megami, the Crystal Pillar descended from the lineage that uses all kinds of elemental divination since the Sengoku Era. Her power is yet to awaken which has the potential to defeat the demon lord, Kibutsuji Muzan. But in order for her to discover her elemental divination power, she must find a focal point, and believe in her inner power. Once she awakens, she will serve as the eye of the Demon Slayer Corps, who will know the Demon's next potential moves, motives, attacks and warn the Pillars that will die on their next mission. She must find inner peace, to feel her core. But her family is dead, and she is swarmed by her ambivalent feelings for Giyuu Tomioka.