Hydra

In the Nakameguro area of Tokyo is Hydra, a bar run by a young woman named Rina. Working in the kitchen is the stoic, tough-as-nails Takashi. Unknown to Rina, Takashi is an assassin for a secret organization that eliminates people threatening society’s well-being. Takashi joined the staff at Hydra to watch over Rina, a promise he made to her dying father. However, Takashi has been targeted by a criminal group, with Rina seen as their key to ridding themselves of Takashi and the vigilante organization as they strive to unleash an unstoppable underworld syndicate the likes of which Japan has never seen.