As a child, Aizawa Yuuichi frequently visited his city-dwelling cousin, but a significant event disrupted his routine, preventing him from returning for seven years. He has now come back to the snowy town, but with a blank slate as all his recollections of past experiences are gone. Yuuichi encounters several young girls who share a connection to his earlier life as he endeavors to settle in. His closeness to them and the time spent together serve as a catalyst for unearthing faded memories from his childhood.