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Maison book girl
Years Active




Associated Acts





Koshouji Megumi
Yagawa Aoi
Inoue Yui
Wada Rin

Former Members

Soumoto Kaori

Promoting Umi to Uchu no Kodomotachi

Promoting SOUP

Promoting yume

Promoting elude

Promoting cotoeri

Promoting 412

Promoting summer continue

Maison book girl are a Japanese idol group signed under ekoms and founded by former BiS member Koshouji Megumi.

Members[edit | edit source]

Past Members[edit | edit source]

History[edit | edit source]

2014[edit | edit source]

On July 8th, at BiS' disbandment live, Koshouji Megumi announced that she would be forming a new unit, named Book House Girl, with former Izukoneko producer Sakurai Kenta.

On November 5th, the group's name was changed to Maison book girl and Koshouji Megumi, Soumoto Kaori, Yagawa Aoi and Inoue Yui were revealed as the group's official lineup.

2015[edit | edit source]

Maison book girl's debut singles, white and black were sold exclusively at their shows from March 14th.

On March 27th, Soumoto Kaori graduated from Maison book girl and Wada Rin joined the same day.

Maison book girl's debut album Bath room was released on September 23rd.

2016[edit | edit source]

At the beginning of 2016, Maison book girl signed with Tokuma Japan Communications.

On April 30th, they released their major debut EP, summer continue.

In October, Maison book girl toured Canada as part of the Next Music From Tokyo event.

On November 30th, they released their major debut single, river (cloudy irony).

2017[edit | edit source]

Maison book girl's second major single, 412, was released on July 19th.

On December 13th, Maison book girl released their third major single, cotoeri. The lyrics for the title track were generated by an AI.

2018[edit | edit source]

In early 2018 Maison book girl signed with the UK label Read The Air Records. Their first international release, Karma // bath room (UK Version) was released on vinyl on May 18th.

To promote the single, Maison book girl held their first UK tour, performing at 4 different locations.

Maison book girl's third album, yume, was released on November 21st.

2019[edit | edit source]

On April 3rd, 2019, Maison book girl released their 7th single, SOUP.

On July 31st, Maison book girl released another single, Umbla.

From November 27th to December 18th, Maison book girl appeared in their own web series on Amazon Prime, Pick Ups! -Maison book girl-.

Maison book girl released their fourth album, Umi to Uchu no Kodomotachi, on December 18th.

2020[edit | edit source]

In early January, Maison book girl announced the release of their best-of album, Fiction. Its release was initially scheduled for April 29th, but was then postponed to June 24th due to the coronavirus pandemic.

From July to December, a second Maison book girl-centered Amazon Prime series, Maison book girl NOW OFF AIR!, was broadcast.

Discography[edit | edit source]

Other Media[edit | edit source]

Web Series[edit | edit source]

Trivia[edit | edit source]

  • The B-Sides to most of their singles are readings of poetry written by Koshouji Megumi.
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