"Journey Through the Decade" (stylized "Journey through the Decade") is a song by Japanese pop singer Gackt, serving as his thirtieth single released on March 25, 2009.

[1] The music video of "Journey Through the Decade" was later released in Stay the Ride Alive, "special memorial single" version which is a Digipak with a special cover, a third disc and a booklet describing Gackt's collaboration with the Kamen Rider Decade production.

[2] On its first day of release, it sold 15,000 copies and weekly reached #2 with 50,000 copies sold on the Oricon Singles Chart.

[5] In June 2009, the Recording Industry Association of Japan certified it as gold.

[6] In December 2012, it was certified as platinum for sales of over 250,000 copies.