Seishun no Hana / Start Line
Regular Edition A
Single by Kobushi Factory
Native title 青春の花/スタートライン
Released March 4, 2020
Genre J-pop
Format CD, CD+DVD, digital download
Label zetima zetima
Kobushi Factory Singles Chronology
Previous Oh No Ounou / Haru Urara 7th Single (2019)
Other Covers

Regular Edition B

Limited Edition A

Limited Edition B

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 was 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 through iTunes,[2] and "Start Line" was digitally pre-released a week after it, on February 19.


Kobushi Factory - Seishun no Hana (MV) (Promotion Edit)

Kobushi Factory - Seishun no Hana (MV) (Promotion Edit)

Kobushi Factory - Start Line (MV) (Promotion Edit)

Kobushi Factory - Start Line (MV) (Promotion Edit)


  1. Seishun no Hana
  2. Start Line
  3. Seishun no Hana (Instrumental)
  4. Start Line (Instrumental)

Limited Edition A DVDEdit

  1. Seishun no Hana (Music Video)
  2. Seishun no Hana (Close-up Ver.)

Limited Edition B DVDEdit

  1. Start Line (Music Video)
  2. Chotto Guchoku ni! Chototsumoushin (A Cappella Ver.)
  3. Nen ni wa Nen (Nen'iri Ver.) (A Cappella Ver.)
  4. GO TO THE TOP!! (A Cappella Ver.)
  5. LOVE Machine (A Cappella Ver.) (Morning Musume cover)

Featured MembersEdit


Kobushi Factory promoting "Seishun no Hana"


Kobushi Factory promoting "Start Line"

Single InformationEdit

Seishun no Hana
Start Line
  • Lyrics and Composition: Hoshibe Sho
  • Arrangement: Miyanaga Jiro
  • Music Video: Koyama Takashi


TV PerformancesEdit

  • [2020.03.30] WE LOVE MUSIC (Start Line)

Concert PerformancesEdit

Seishun no Hana
Start Line

Chart PositionsEdit

Oricon Chart PositionsEdit

Daily & Weekly Rankings
Mon Tue Wed Thu Fri Sat Sun Week Rank Sales
- 7 17 13 14 18 7 9 12,872
17 - - - - 10 19 29 1,252
24 - - - - - - 75 366
Monthly Ranking
Year Month Month Rank Sales Ref
2020 March TBA TBA

Total reported sales: 14,490

Weekly Combined Ranking
Week Rank Points
14 13,762

Total reported points: 13,762

Billboard Japan Top Single SalesEdit

Week Rank Sales Ref
16 7,329 [3]
28 1,429 [4]
73 N/A [5]

Total reported sales: 8,758

Recochoku Music Video RankingsEdit

Song Daily Rank Weekly Rank Monthly Rank
Seishun no Hana 3 10 TBA
Start Line 6 9 TBA


  • The far left side of the Limited Edition B cover features the outfit that Hamaura Ayano wore for their cover of "Nen ni wa Nen (Nen'iri Ver.)" on the OMAKE CHANNEL.
  • "Start Line" has the same title as a solo song written and performed by former Up Up Girls (Kari) member Sato Ayano.
  • It was released on the same day as Nakajima Takui's album, BEST YOURS II 2010-2020 Double Decade.
  • For a limited time, fans who purchase the single at select stores will get one of six clear ticket holders as a bonus.[6]
  • 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.
  • Starting February 29, all release events for the single were cancelled in consideration of a new policy established by the government to prevent the spread of the coronavirus.[7]
  • This is their lowest ranking single and also their lowest first week sales.


External LinksEdit

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