Seishun no Hana / Start Line (青春の花/スタートライン; Flower of Youth / Start Line) is Kobushi Factory's 8th and final single. It will be released on March 4, 2020 in four editions: two regular and two limited.[1] The first press of the regular editions include a random trading card of 6 kinds depending on the jacket (12 in total).
"Seishun no Hana" was digitally pre-released on February 12, 2020.[2]
For a limited time, fans who purchase the single at select stores will get one of six clear ticket holders as a bonus.[3]
Towards the end of "Seishun no Hana", the members sing the same "la la la" part that was featured at the beginning of "Shalala! Yareru Hazu sa" while mimicking the choreography.