 For promotion of this single, various commercials with Gintoki from Gintama and Hitomi Takahashi herself have aired on Japanese televisions.As her previous two singles, "Candy Line" is produced by ex-Judy and Mary member TAKUYA.The main song is described as a pop rock tune, which will remind the listener of the heyday of Judy and Mary, and will give Hitomi a "new appeal."