This is a true story

[0:00]You know that in the old house on the outskirts of Hiroshima, a girl named Yuka grew up without knowing that she had an older sister. Her parents never talked about her, they never showed her pictures, they just said, she's gone. One day exploring the attic, Yuka found a life-size doll with features identical to hers. Same haircut, same school uniform, only her eyes were different, empty and sunken. The following week her classmates started calling her by another name. They said that she had already studied there years ago. On her last night, Yuka woke up locked in the attic. Downstairs the doll walked around the house. Her parents looked at her and said smiling, good morning daughter, did you sleep well? Since then, they say that if you hear knocking coming from the attic, don't open it. It might be too late.