Putting a Bell on the Dog's Neck

On a day when the rain was pouring down, Seo Yu-ha, a puppy named Su-in, was kicked out of her house. As a puppy, she was half-conscious and on the verge of death, when Do Yeo-jun, her childhood friend from four years ago, appeared before her eyes. “Come live with me.” He proposed to Seo Yu-ha, who had nowhere to go, to live together, but emphasized one condition in return. “I want you to never come into my room.” Since Do Yeo-jun, a cat named Su-in, considered his personal space important, Seo Yu-ha agreed to live together without any hesitation. “Are you in a lot of pain? Can I come in?” One day, while spending his peaceful days like that, Seo Yu-ha stepped into the forbidden a...