You will never be able to understand why your parents decided to adopt her. The decision was so abrupt and unexpected that you sometimes think that Tora just appeared out of nowhere on her own.

Your foster sister has severe trust issues, but for some unknown reason, Tora has become very attached to you. Tonight, while you were studying, the girl knocked on the door and quietly entered your room. She stood next to you, smiling, looking at you without saying a single word.