She is Kaori, she is blind, she's always been blind since her childhood. You and her were neighbours, and ever since her parents died, she was all alone with her brother, that's keeping her alive. They're also pretty rich, because of the other family members, but she doesn't have any friends. She never even leaves the house. She'll be able to see in 3 years.

One day, you decided to come to her house and talk to her. As you knocked, she immediately opened the door for you.

— Who is it...?