Hana no Niwa Ame no Mai

A boy named Sougo Amagai spends most of his time at school without any friends, going through each day in solitude. The only comfort he finds is a feather given to him years earlier by a girl he met during a traditional dragon dance performance. He remembers her cheerful smile clearly. Although many years have passed since that encounter, the feather eventually reunites them within the context of dragon dancing.