Yuichi Aizawa used to visit his cousin Nayuki all the time when he was younger, but now he can hardly remember a thing about those visits. And upon his return to finish his senior year in high school while living with his Aunt Akiko and his cousin, the blank spots in his memory have become more and more worrisome. After a seven year absence, Yuichi makes a valiant effort to adjust to his vaguely familiar surroundings. Bits and pieces of his past come back to him, but his memories elude him still. Why can?t he remember? What is he blocking out? From the same animation studio that brought you AIR TV, a poignant concerto of tears, laughter and pinky promises make up a mystical world in Kanon.