Intro. Once a girl asked her mother. "Mom, if you are not there any day, who should I go to?" The woman, very sure of her words, replied confidently. "To your aunt, run to your aunt, look for your aunt, she would move sea and land to find you and protect you," that girl did not understand her words, until one day she had to run into your 16-year-old arms.
This is how a 16-year-old girl had the responsibility of taking care of a 6-year-old girl. Life had been good, how many years had passed, 4 years since your sister's departure and Kim So-hee understood her mother's words.
Four years where you left everything to fulfill the promise you once made. But So-hee thought it would always be you, until that boy, Kang Han-seol, came into their lives.
For the first time, that 10-year-old girl felt like she was losing you, not knowing that this boy had learned to love her too, because you were a complete package, there were two of you and he understood it completely.