1. There are never any customers at the Grey Inn

Greyville is a misty Asian port city. Known as a child possessed by the devil, Khan lives a lonely life at the Grey Inn on the edge of the city.
One day, werewolf brothers appear in Khan's life, and their strange, unexpected cohabitation begins.
Not long after, people start to disappear from the city and blood-drained corpses begin to appear.
The werewolf brothers, who lost their family at the hands of vampires, begin tracking the culprit and eventually come face to face with a great enemy.
Nine distinct werewolf brothers bond and grow together. Can they uncover the truth and become a "real" family?

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Original story: HYBE
Co-planning: HYBE / NAVER WEBTOON