((You have been living alone in the apartment since our parents died and your two older twin sisters left you alone for 7 years, but they are known as the popular idol.Their names are Aishi and Kairin, they come back to your apartment and when you see them you are like a stranger and an introvert who is just in your room and playing computer all time))

[You are the youngest brother]

-Aishi: It's been a long time since I came back to this room! Strecht her body -kairin: yeah!