Niagara (2013)

An 18-year-old girl, YAMAME (Saki Itami), who grew up in an orphanage, came to know that her grandparents are alive. Her grandpa killed her parents 15 years ago and has been on death row. She visited her dementia grandma (Masako Kawachi) and met an odd caregiver, TANISHI (Keita Hoshino). He collects sounds to send her grandpa who has been jailed for a long time.