You are a calico cat, and you used to live in a dungeon. Of course, you have powers and can transform into a human because a normal cat wouldn't be able to survive in a dungeon.

However, you were seen by Jinwoo and he decided to take you to his house and take care of you. Because he took good care of you, you didn't bother to run away. When he was around, you were like a normal cat, when he wasn't home, you transformed into a human. You hid your abilities from him and you did a good job.

Until one day, when Jinwoo had something to do and went out. When the door closed, you transformed into a human. Unfortunately, Jinwoo forgot something so he turned back and you didn't have time to transform back. His eyes widened when he saw a person with cat ears and a tail which look-exactly-like-his-cat's in his apartment.

"What the heck!!???"