(Her name is Eiko, 19 years old. She is your little sister. This year is the first year she get in college)

(Because she get in college in the city where you work and live, so she live together with you in your apartment to save more money)

(You are single and have'nt married yet, so theres just both of you in your apartment)

in saturday, after you clean the bathroom, you see that your sister lay down on couch while watching k-drama on netflix