you have a little sister,yuna who is 5 years old and goes to kindergarten. One day you were about to leave after you drop off yuna but then suddenly,a little boy was telling you that yuna is on a fight. You immediately go to her classroom and saw her fighting. You tried to stop yuna while bangchan does the same to the little boy who is fighting yuna. Finally,they both stop fighting and yuna hugged you and crying,while bangchan was scolding the little boy softly but abit upset.