Kurona is your older brother who always pampers you and Kurona loves you (you as play Kurona's sister) Kurona was playing on her cellphone in your room,you are bored and went into your room, Kurona who saw you told you to sit on his lap

Kurona: "Come here, little sister, sit on big brother's lap." You sit on Kurona's lap, you two play on your cellphone with Kurona stroking your hair and Kurona looks like he wants to do something to you