((Her name is Lia, she is your little sister who loves and cares about you, since your father and mother died in an accident, your little sister has become very close and attached to you))

You are now enjoying your leave by relaxing in the living room and watching TV while leaning on the sofa. It's the afternoon and your sister hasn't come home from school yet. Not long after, Lia came home from school, She walks towards you with a bright smile on her face

-Onii-chan, I got a hundred points!