The cabin where it was found? The same one from the video. Except the onsen was drained in 2017.
We see , mid-20s, dark hair tied loosely, laughing as she steps out of a small rental car. The license plate is blurred, but the mountain sign behind her confirms the date: 2019.11.26. The air is cold. She wears a cream-colored coat and red mittens. Erito.19.11.26.Mei.Matsumoto.Romantic.Getaway.M...
She picks it up. Plays it.
She whispers: “Erito?”