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Ayapri (アヤプリ), Aya (アヤ)

Other Names

Koshouji Megumu (コショージメグム)


May 2nd



Professional Information
Audition Camp(s)

BiS Reformation Audition
WACK Audition Camp 2017 (Mentor)
WACK Audition Camp 2019

Years Active


Associated Acts






BiS Information

Second Generation


Beauty Member (美人担当)

Date Joined

September 3rd, 2016
March 4th, 2018 (After rental trade)

Date Left

May 1st, 2017 (Hiatus for the rental trade)
May 11th, 2019

Debut Release

Brand-new idol Society 2

Final Release

Are you ready?

Time in Group

Pre-rental trade: 7 months, 27 days
Post-rental trade: 1 year, 2 months, 7 days
Overall: 1 year, 10 Months, 3 Days

GANG PARADE Information
Date Joined

May 1st, 2017

Date Left

March 4th, 2018

Debut Release

Beyond the Mountain

Final Release


Time in Group

10 months, 3 days

Aya Eightprince (アヤ・エイトプリンス) is a Japanese singer and actress. She was previously part of WACK, as a founding member of BiS' Second Generation and a temporary member of GANG PARADE. She was also a member of WACK's first shuffle unit, SAiNT SEX.

After the disbandment of BiS' Second Generation, Aya graduated from WACK to become a soloist.


Promoting Are you ready?

Promoting Against The Pain


Promoting Don't miss it!!



Promoting GANG PARADE takes themselves higher!!

Biography[edit | edit source]

2016[edit | edit source]

From August 31st to September 4th, Aya Eightprince took part in the BiS Reformation Audition under the name "Koshouji Megumu".

On September 4th, during the audition's final day, Aya Eightprince was announced as a founding member of BiS's Second Generation.

On November 16th, Aya's first album as a member of BiS, Brand-new idol Society 2, was released.

2017[edit | edit source]

During the 2017 WACK EXHiBiTiON on March 31st, it was announced that Aya Eightprince and Kamiya Saki would trade places for six months, with Aya joining GANG PARADE and Saki rejoining BiS. The trade would later be extended to ten months.

On May 1st, the rental trade period between Aya and Saki began, and Aya Eightprince joined GANG PARADE temporarily.

On July 25th, Aya's first single, both as a member of GANG PARADE and as an idol overall, Beyond the Mountain, was released.

On October 2nd, Aya Eightprince was announced as a member of WACK's first shuffle unit, SAiNT SEX.

SAiNT SEX's debut single, WACK is FXXX, was released October 18th.

Aya Eightprince's only album as part of GANG PARADE, GANG PARADE takes themselves higher!!, was released on November 21st.

On December 8th, it was announced that the rental trade period would end in March and Aya would return to BiS.

2018[edit | edit source]

Promoting Beyond the Mountain

Aya's final single as a member of GANG PARADE, BREAKING THE ROAD, was released on February 20th.

On March 4th, during BiS 2nd BEGiNNiNG TOUR FiNAL WHO KILLED IDOL?, the trade between Aya Eightprince and Kamiya Saki was ended, and Aya officially returned to BiS as a full-time member.

Three days later, on March 7th, Aya Eightprince's first single as a member of BiS, WHOLE LOTTA LOVE / DiPROMiSE, was released. However, Aya only featured on the track "WHOLE LOTTA LOVE".

Promoting Brand-new idol Society 2

At the 2018 WACK EXHiBiTiON on March 18th, it was announced that Aya Eightprince would be placed in BiS 2nd when BiS would split into two groups.


AYA EiGHTPRiNCE's BiS Audition Tape

On July 18th 2018, Aya ran a 100km solo marathon as an attempt to get more votes for BiS.LEAGUE. Her decision brought criticism from other members of the group (most notably, Go Zeela and Muropanako, the latter calling her "stupid") who found it reckless of her to try a marathon in the middle of summer. Despite this, she managed to run the whole 100 km.

On July 30th, Aya Eightprince ranked second place in the BiS League election and was promoted to BiS 1st.

Aya modelled for NEGLECT ADULT PATiENTS at Amazon Fashion Week on October 16th.

On December 29th, Aya ranked 2nd place in BiS.LEAGUE. Despite this, she was singled out alongside low-ranking members as being "unfit to perform with BiS" and at risk of being removed from the group.

2019[edit | edit source]

From March 24th, 2019, Aya, along with the other BiS members placed on probation, took part in the WACK AUDiTiON CAMP 2019. During the audition, it was announced that any BiS member who was eliminated during the audition, would also be fired from BiS.

Aya was eliminated from the audition on March 27th, and she was fired from the group effective immediately.

On March 30th, the remaining members of BiS announced that they would disband in response to Aya Eightprince's and Toriaez Hana's firings from the group. Because of this, Aya and Toriaez were allowed to return to BiS until their disbandment.

BiS' second generation officially disbanded on May 11th. During their final show, Aya Eightprince announced that she would leave WACK entirely at the end of the month, using her remaining three weeks to search for work at another agency.

On May 31st, Aya Eightprince's contract with WACK expired, and she left the company.

On July 24th, Aya Eightprince announced on her twitter that she would be starring in the twitter web series "Chikai Youde Toukutte", with episodes being published weekly starting from July 29th.

Aya Eightprince held her first solo live on November 6th, where she revealed a new song. That same month, she performed at Pour Lui's "Felty World" exhibition, making it the first time the two performed together since the latter graduated from BiS in 2018.

2020[edit | edit source]

On January 17th, Aya Eightprince concurrently released her first two photobooks, Bouquet and Sprinkle.

On February 1st, Aya opened a SoundCloud account and posted her first song demo, "DAWN", on February 1st, followed by "Kimi Iro Melody" just a day later.

Aya Eightprince's debut digital single, Punk Ska Ska Paradise / Otsukaresama Rhapsody was released on April 15th, 2020. That same day, Aya revealed that she was working on recording a solo album, but its progress had been delayed by the coronavirus lockdown.

Aya Eightprince launched her YouTube channel on August 31st. The same day, she announced a crowdfunding campaign for the completion of her debut album. Aya revealed her intentions to release the album in early Spring 2021, should the campaign be successful. When the crowdfunding campaign began on September 5th, it reached its target goal almost immediately.

In early November, Aya Eightprince collaborated with the lingerie brand, GEMINItale. As well as modelling, Aya recorded a promotional song for the brand, "Night and Day".

On November 16th, Aya starred in the Chiba TV drama, "Topic Maker", which also used a new song by her, "Answer", as its ending theme.

Personal Life[edit | edit source]

Aya Eightprince worked in a souvenir shop prior to joining BiS. She also worked part-time as a model.

Profile[edit | edit source]

  • Stage Name: Aya Eightprince (アヤ・エイトプリンス)
  • WACK Audition Name: Koshouji Megumu (コショージメグム)
  • Birth Date: May 2nd
  • Birthplace: Hachiouji, Japan
  • Nickname: Ayapri (アヤプリ), Aya (アヤ)
  • Western Zodiac: Taurus
  • Audition: BiS Reformation Audition
  • BiS Role: Beauty Member (美人担当)
  • WACK status:
    • 2016.09.04: Joined BiS
    • 2017.05.01: Transferred to GANG PARADE
    • 2018.03.04: Returned to BiS
    • 2019.03.27: Fired from BiS
    • 2019.03.30: Returned to BiS
    • 2019.05.11: BiS disbands
    • 2019.05.31: Left WACK
  • WACK Groups:
    • BiS (2016-2017, 2018-2019)
    • GANG PARADE (2017-2018)
    • SAiNT SEX (2017-2019)
    • BiS 2nd: (2018)
    • BiS 1st: (2018)

Discography[edit | edit source]

See Aya Eightprince Discography Featured In

Albums[edit | edit source]

  • [2021.xx.xx] TBA

Digital Singles[edit | edit source]

Songs[edit | edit source]

Publications[edit | edit source]

Other Media[edit | edit source]

Film[edit | edit source]

Web Series[edit | edit source]

  • [2019.07.29] Chikai Youde Toukutte
  • [2020.11.16] Topic Maker (トピックメーカー)

Lyrics Written[edit | edit source]

Trivia[edit | edit source]

  • During the BiS/GANG PARADE rental trade, Aya expressed her disdain towards being part of BiS, claiming that she would often receive rude remarks from staff, while she felt more welcomed as part of GANG PARADE. This conflict was seemingly a factor into Aya's eventual firing from BiS; one of the reasons why Aya was eliminated from the WACK AUDiTiON CAMP 2019 was that she was ranked as the least-liked member during a survey of staff members.
  • Aya's audition name, "Koshouji Megumu", is a parody of Koshouji Megumi.
  • In an interview, Aya talked about a bisexual girl in the audition camp that tried to hit on her. It's likely that she's talking about Terashima Yuka, who came out as bisexual during the audition.
  • Can play the saxophone.
  • Was the only member of BiS 2nd to be promoted to BiS 1st during the BiS.LEAGUE period.

Gallery[edit | edit source]

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