Suzu is a fake memory walking around in a dead boy's body, and Hotori is losing hers one day at a time, so they meet and decide to figure out who they actually are. The film doesn't waste time on the philosophical setup; it moves straight into the quiet devastation of two kids trying to stay real to each other while their anchors slip away. Memory isn't what makes you yourself here. Choice is.
At a facility where robots receive implanted memories of deceased humans, Suzu awakens as a synthetic copy of a boy his new family lost to tragedy. He's meant to fill a void, to be a replacement so perfect that grief might finally soften. But Suzu meets Hotori, a girl whose memories are disappearing piece by piece, erased by a condition no one can stop. While Suzu gains an identity borrowed from someone else's life, Hotori loses her own with each passing day. The two forge a quiet friendship between these opposing forces: one becoming someone he wasn't born to be, the other struggling to hold onto who she is. Together they navigate what it means to be yourself when your past is either synthetic or slipping away. The film moves through their bond with a melancholic tenderness, asking whether identity lives in memory or in the connections we build despite our fractured selves. It's a story for anyone who's ever felt like they don't quite belong to their own life, or wondered if the people we become matter more than who we were.