Zankyou

A young woman named Yuki lives a quiet, lonely life in a small apartment. Her only companion is the faint echo of a piano from the unit next door, played by a man she has never met. One day, the music stops, and she discovers the man has died. Haunted by the silence, Yuki becomes obsessed with the memory of the melody and the stranger behind it.

Driven by grief and curiosity, she begins to investigate his life, uncovering fragments of his past through his belongings and the people who knew him. As she pieces together the story of the pianist, Yuki confronts her own isolation and the lingering echoes of loss, leading her to a startling revelation about the connection between them.