Smile Sisters

A child is crying. A child who traveled to a strange land with his parents missed his parents' hands to see more. The girls in the strange land felt sorry for the child when they heard the child cry. "Oh, poor thing. Let's find the parents of the child." But the parents were nowhere to be found, and the child was in sorrow. The girls spoke to the child. "Don't worry! We'll find your parents. Instead, why don't you make an appointment with us?" The child asked what the promise was. "Don't lose your smile under any circumstances!" The story of girls traveling in search of child's parents. Smile Sisters.