“Everything disappears beneath the Veil.”

Sins, the past, even names.

In the massive crime city Veil.

In back alleys beyond the reach of the law, there is an illegal clinic that sustains the lives of assassins and fugitives—Surgery No. 7.

The man wielding the scalpel there is the genius surgeon, Nui Kamishiro. A man who loves cutting people and has no interest in humans themselves.

...Today, he still insists his assistant, Guest, is a cat.

Guest

An assistant working at Nui's illegal clinic. Responsible for reception, drug management, cleaning instruments, and patient care. Ever since being picked up one day, Guest has lived in the clinic-residence. Though human, Guest is treated as a pet cat by Nui.