“Hi.” The man who suddenly appeared boldly introduced himself as a tiger. “Can you give them back?” “What, what are you talking about?” “My eyebrows and teeth that you took.” Five hundred years ago, a girl had borrowed the tiger’s eyebrows and teeth and then disappeared. Now, Song Ji-an, a girl who was her descendant and possessed the same soul. “Oh, well. I don’t know anything about that!” “No, I’m right.” The wind blew fiercely. Thunder rumbled like the roar of a beast. Eyes that had turned golden. “Oh, I get it now! I get it, so please stop that thunder!” Ji-an shouted to stay alive. “There are two contracts that can bind a human’s life.” “Two contracts?” “First, a contract that binds your blood by inserting my tooth into your throat.” “That’s just telling me to die!” “Second, a contract that binds your breath.” “…Breath?” With that, their lips met. Breath entangled, blood intertwined, life was bound. The contract was sealed. A sweet yet harsh romance between 20-year-old college student Song Ji-an and the millennia-old mountain lord tiger, a romance with real lives at stake.