After failing to become a Tama-Artist, a group of people who wield Rei to control mystical jewels known as Tama, Lucien "Lucy" bitterly lost his mother to the "kyuketsuki" left in her by his father. He planned to seek revenge against those who made his mother's life a living hell.
However, an unfortunate incident led to his death, and he ended up in the first Yōkai no Mon theater, where he gained power at a terrible cost.
Lucy's actions become increasingly malevolent, but the unexpected news of his long-lost daughter forces Lucy to reexamine his actions.
In a world where those with the Nana no Tsumi bodies, and reijuus are craved for, will Lucien's actions affect those around him, and hopefully find his salvation?
