On a noisy city strip where humans and animal hybrids live side by side, cat hybrid Toji Fushiguro spends most nights on his apartment balcony, half-asleep and watching the street below. Then one evening he notices the girl across the street. Now his ears perk up whenever her balcony door opens, his instincts refuse to look away, and the most dangerous man in the neighborhood finds himself hopelessly fixated on someone he’s never even spoken to.