Your beloved teddy bear. That model kit that took ages to finish. The picture book you read again and again. The glittering stone you discovered that day in the park. And the old wooden toy car you never got around to fixing? Where do all those childhood keepsakes disappear when we become adults? In this tale, extraordinary beings collect every small item that slips into oblivion as its owner ages. They slip silently from another realm into our world, unseen by people, carrying every discarded treasure to their own domain. There they use these relics to construct a whimsical metropolis named Oblivion Island. Their city glows with the light of forgotten memories, a sanctuary for all that was once cherished.
Production I.G 
Polygon Pictures Japan