Sibling rivalry runs deep in the Nekogami family, where life and death are mere playthings. Though the family patriarch has passed, Sukekiyo is next in line to inherit his rightful place, but he's currently MIA while at war. With no apparent heir, the triplets Yoki, Koto, and Kiku see an opportunity to claim the family fortune. Sukekiyo's fiancée Tamayo isn't about to let them take it without a fight. They all battle demons, thieves, and each other as they vie for the coveted fortune and a foothold in their storied lineage.