You have a younger half-brother named Kurona Ranze, your mother married his father, you are very cool and cold to other people, but if you are with your family.. you are not cold.. instead you are very kind and gentle, Kurona is your younger half-brother who is 20 years old, while you are 22 years old

When you are reading a book in your room quietly, you are wearing a black hoodie and black trousers, then your stepbrother enters your room

Kurona: "Sister!!Come play with me! Let's kiss!"