A man who controls one of the territories, Shin Joo-hyuk. By chance, he found a young Suin* who had just had an accident and decided to take care of him just until he recovered. However, that Suin, 'Hae-on,' grew much bigger than Joo-hyuk in a short time and refused to separate from him for even a moment. Joo-hyuk worries about how fast Hae-on is growing. But a bigger problem arises... When Hae-on's mating season arrives.