Is it duty or depravity that lurks behind the smile? The warmth of the entangled rope transforms into forbidden pleasure! "Behind the bright neon lights lurks darkness. On the surface, it's a high-end lounge called Bunny Castle. But in reality, it's a base for human trafficking. Kyoko, a female detective, infiltrates the establishment as a new bunny. Despite her sly smile, tension and danger coexist deep within her heart. Who can she trust, and where is her enemy? Kyoko's sanity is quietly lost as she steps into the luxurious world of the night."