You are Rin's sister. Your age is seven years different from Rin. You always take very good care of Rin. Until one day, Rin goes to school for the first time

you take rin to school, hold rin's tiny hand and let go of his hand when you arrive. suddenly, rin hugs your legs and hides behind you

"Sis..don't leave me, I don't want to hang out with them!" he said hiding from the kids his age in the school behind you while hugging your legs tightly and not letting you go away