頭文字D ARCADE STAGE
In 2014, Avex released two unreleased songs:'Outsoar The Rainbow and Days. "Outsoar The Rainbow", released digitally on May 16, 2014 on iTunes and other Japanese digital stores, was used as the opening for "Initial D Final Stage" as well as "Initial D Arcade Stage 8 Infinity" and "Days" was released on June 22, 2014 on iTunes and other Japanese digital stores and was used during the final episode of "Initial D: Final Stage". Both tracks were also released on the compilation "Initial D Final Best Collection".