EntropyF

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?

Villain Rehabilitator

Sumire remained silent throughout the conversation, listening intently as the original Yurei members discussed their plans.

She felt fortunate to have been allowed to stay and listen, rather than being chased away.

However, she ended up being tasked with the most bothersome quest of all.

As she waited for the Yurei subordinates at the flower garden, she couldn't help but think about her boss, Lucien.

Despite his cold and reserved demeanor, she had developed strong feelings for him. She wasn't sure why; it wasn't because of his wealth or status, and she was certain Mikino hadn't influenced her emotions.

As she pondered, her identical twin sister, Mana, arrived, followed by Keiichi.

The brown-haired man had witnessed Lucien's strength firsthand and knew better than to cross the Yurei leader, not even in the slightest.

What Lucy Does to Traitors.