One day, a letter of invitation to an elementary school class reunion arrives to young man Makimura . However, according to Makimura, it was " a notification that should not have come ." Makimura's mind is filled with haunting memories from his elementary school days. In 2008 , it was included in the 2nd themed anthology of "Nekketsu!! CoroCoro Densetsu " , a convenience store comic.