Wikipedia
Seishunfu
is the 14th single by the Japanese female idol group Momoiro Clover Z, released in Japan on March 11, 2015. It debuted at number 4 in the weekly Oricon singles chart.
Unlike other main tracks from previous singles, "Seishunfu" has only a short version from their music video available on YouTube (reduced to 2'00"), and the full version (included only in a bonus disc in Limited Edition A) was not released. Instead releasing a full PV from "Seishunfu", clips from " Maku ga Agaru" were uploaded from the official MCZ channel prior to the release of " Z no Chikai".
An updated version from " Hashire!" (originally recorded in 2010, as of Momoiro Clover), was included for the single.