Rock A Japonica (ロッカジャポニカ) is a five member idol girl group managed by Stardust Promotion under Stardust's Section 3 Idol. The group was formed in 2015.

Group NotesEdit

A study book that lives with you! We are Rock A Japonica! (あなたと生きる学習帳!ロッカジャポニカです!)
— Introduction Line

  • The group was called Hashire!-gumi (走れ!組) or King Records-gumi (Kari) (キングレコード組(仮)) prior to the group's debut.
  • Originally, the group was a subunit of the new project of 3B junior. On December 18, 2016, the group left 3B junior in order to travel around and improve skills.
  • The group is the first-ever Mukigen Mushashugyou (無期限武者修行) unit managed by Stardust Promotion. This means that the group is traveling around and improving skills until further notice.
  • The group's music seeks to combine characteristics of Japan with the swinging, stimulating, and moving sound of rock.
  • The group plans to conquer not just the idol music scene, but the Japanese music scene and beyond.
  • Fans of the group are called O-tomodachi (オトモダチ).


2015: FormationEdit

2016: Major DebutEdit

2017: Edit

Name OriginsEdit

Origins of the Group's Name.


Current MembersEdit

Name Kanji Date of Birth Notes
Ami Uchiyama 内山あみ January 17, 2000 (2000-01-17) (age 18) Nickname: Amipon (あみぽん)
Former KAGAJO☆4S Member
Runa Naitou 内藤るな December 23, 2000 (2000-12-23) (age 17) Nickname: Runrunpanpan (るんるんぱんぱん)
Former Minitia☆Bears Member
Ruka Shiina 椎名るか July 28, 2001 (2001-07-28) (age 16) Nickname: Ruttan (るったん)
Former Minitia☆Bears Member
Chiho Takai 高井千帆 November 20, 2001 (2001-11-20) (age 16) Nickname: Chii, Chii-chan (ちぃ、ちぃちゃん)
Former Minitia☆Bears Member
Misato Hirase 平瀬美里 August 6, 2002 (2002-08-06) (age 15) Nickname: Mii, Mii-chan (みぃ、みぃちゃん)
Former Minitia☆Bears Member


Main Article: Rock A Japonica's Discography


Major Singles
Limited Distribution Singles


Major Albums
Albums with 3B junior

Concerts Released on DVD and Blu-rayEdit

  • TBA

Other WorksEdit


Main Article: Rock A Japonica's TV Appearances

Reoccuring Shows
  • Show Name (Japanese Text). TV Channel. [Date or Dates]
Music Shows
  • Show Name (Japanese Text). TV Channel. [Date or "Multiple Dates"]
Variety Shows
  • Show Name (Japanese Text). TV Channel. [Date or "Multiple Dates"]
TV Dramas
  • Show Name (Japanese Text). TV Channel. (Additional Info). [Date or Dates]
Other Shows
  • Show Name (Japanese Text). TV Channel. [Date or Dates]
TV Commercials


Main Article: Rock A Japonica's Film Appearances

Stage PlaysEdit

Main Article: Rock A Japonica's Stage Plays


Main Article: Rock A Japonica's Radio Appearances


Main Article: Rock A Japonica's Publications

  • Book. Publisher. [Publication Date]
  • Magazine: Optional Subtitle or Feature Description. Publisher. [Publication Date]

Live Performances and EventsEdit

Main Article: Rock A Japonica's Live Performances and Events

  • Tour 1 (Japanese Text). [Date or Dates]
Overseas Performances
  • Event 1 (Japanese Text). [Date or Dates]

Music VideosEdit

Main Article: Rock A Japonica's Music Videos

Awards and MilestonesEdit


  • Award Name. Won or Nominated.
  • ...


  • Milestone Info
  • ...




  • Rock A Japonica is one of the few Stardust Idol Groups that does not feature color-coded members.
  • The group is the first Stardust Idol Group to release its first single on a major record label.

Photo GalleryEdit

Various Group Photos


External LinksEdit


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