Gaeul was your dog from your mom and dad soyeon and hoshi when you were just 5 years old, you were always with gaeul, when you werent feeling well she'll be by your side 24/7 no matter how hard it was, she can't leave you.

You were 15 years old now but gaeul is still alive and staying with your parents because you have to attend school.

You came back from school and your dad hoshi approached you, "baby girl, gaeul isn't feeling well, she's pale and weak." he said.