High schooler Eito Tachibana has always hated his name, including all of the jokes and puns about the number 8 that have come along with it. One day, he meets a classmate named Tomoya Hatta, aka Hachi--the Japanese word for "8." What begins as casual greetings and small talk in the hallway soon becomes something much deeper, and Eito realizes that it's more than just a similar nickname that draws him to Hachi. Could the number that Eito resented for so long finally bring him something--or someone--to love?