Hana Ookami and Kai, her guardian, are two of the last survivors of the Ookami Clan, which suffered a massacre. Traumatized, the only way Hana has found to escape from all this pain is to isolate herself from everything, hiding even the fact that she is still alive. However, everything changes when a series of murders begin to emerge that are credited to a supposed survivor of her former clan. To avoid seeing her family's name in the mud, she must decide whether or not to try to unravel this mystery.