The year 2025 marks the 100th year since the first year of the Showa era, the Showa 100th year. In this milestone year, Charan-Po-Rantan releases an album covering Showa-era kayou songs. It is their first cover album in nine years since the release of "Karimono Kyosou" in 2016. They have been uploading cover performance videos weekly on their official YouTube channel, and Charan-Po-Rantan, who have covered many Showa era kayou songs, carefully selected 16 songs they felt were suitable for the "Showa 100th Year" and compiled them into an album. Furthermore, the Limited Edition contains karaoke audio sources of all the included tracks.