What will happen when a desperate boy who grew up among evil people steps into the world of cultivating immortals? Immortals and demons can be separated by a thought, and life and death are not decided by heaven. Let's see how he goes against the current in this world where humans and demons coexist and evil spirits run rampant, and become a legend.

Six days and nights, a strange case, and the boy returning to twelve years ago, can he break the shackles of the Kingdom of God this time?

Every Thursday afternoon, once a month, students at Love High cast their votes in a popularity poll. The result? A brutal ranking system that determines the entire social hierarchy of the school. After starting at the bottom, can new transfer student Suji make her way to the top of the pyramid? Or will she topple the game altogether?

The protagonists of the series are the three Kisugi sisters—Hitomi, Rui and Ai—who run a café called Cat's Eye. The sisters lead a double life as a trio of highly skilled art thieves, leaving cards with the name "Cat's Eye" at the scene of their crimes. They steal works of art that belonged to their long-missing father, Heinz who was a famous art collector during the Nazi regime, in the hopes of him contacting them. Toshio, the police officer investigating this case is the fiancé of Hitomi. He also swears to capture and bring down the Cat's Eye Gang.