You meet someone for one perfect afternoon and spend fifty years carrying the proof it happened, only to realize you've forgotten their face. The feather in your pocket becomes a monument to something you can't quite remember. Tori no Uta trades plot for the weight of a single, unbearable question: is a memory you've lost still real if you never stop carrying it?
A young boy discovers an unfamiliar street cutting through his city and follows it into the rain. There he meets a girl who offers him shelter, and in that brief moment, something shifts. Before they part, she gives him a single feather and tells him to keep it safe. If he does, they will find each other again. He returns home clutching the feather, but when he tries to retrace his steps the next day, the path has vanished. Years slip by. The girl fades from his memory until she becomes nothing more than a dream he can't quite remember having. Fifty years later, an old man walks through the same city streets. The feather is still in his pocket, worn smooth by decades of carrying it. That night, he dreams of her face for the first time in decades. The question hanging over everything: has the promise made all those years ago been waiting for him to remember it? A meditation on memory, love, and the threads that bind us across time.