恰克與飛鳥
"On Your Mark" was first released as the third track on a CD single also featuring the songs "Heart" and "Natural" and appeared on the album "Code Name. 2 Sister Moon". The song was included on several compilation albums. For the Japanese market on "Chage and Aska Very Best Roll Over 20th" and for international markets on "Greatest Hits", "The Best" and "Asian Communications".