WACKi Wiki
WACKi Wiki

June 2022 (SEE YOU)

June 2022 (Don'nani Kimi Ga Kawatte Mo Boku Ga Don'na Fuu Ni Kawatte Mo Ashita Ga Kuru Kimi Ni Au Tame)

April 2022 (LiE LiE LiE)

April 2022 (Gomen ne)

February 2022 (Aishiteru to Ittekure)

January 2022 (Pyo)

December 2021 (FiNAL SHiTS)


January 2021

October 2020 (STORY OF DUTY)

June 2020 (LETTERS)

May 2020 (TOMORROW)

March 2020

January 2020

October 2019 (KiND PEOPLE / Rhythm)

June 2019 (CARROTS and STiCKS)

May 2019 (CARROTS)

April 2019 (STiCKS)

November 2018 (Stereo future)

BiSH (ビッシュ), also known as Brand-new idol SHiT (Shinsei Kuso Idol, 新生クソアイドル), is a Japanese idol group under WACK that was founded in 2015. They will disband in 2023.

The group was conceived as a successor to BiS, whose first generation had disbanded the previous year. However, they since developed their own identity, especially after BiS was rebooted.

They are often described as being "a punk band without instruments".

As of WACK ROCKiN' PARTY, most groups have been given representative colours, as used in their costumes. BiSH's colour is Red Penlight.png red.

May 2018 (Life is beautiful / HiDE the BLUE)

March 2018 (PAiNT it BLACK)

November 2017 (THE GUERRiLLA BiSH)

May 2017 (GiANT KiLLERS)

January 2017 (Promise the Star)

August 2016 (KiLLER BiSH)

June 2016

April 2016 (DEADMAN)

December 2015 (FAKE METAL JACKET)

August 2015 (OTNK)

March 2015


Past Members



On January 13th, 2015, Watanabe Junnosuke announced his plans to restart BiS, this time named "BiSH", and opened auditions to find members.

BiSH's starting lineup, Yukako Love Deluxe, Cent Chihiro Chittiii, Hug Mii, Momoko Gumi Company and Aina The End were announced on March 9th. The members' faces were obscured with black contact lenses and could not be revealed until they each attained 4,444 followers on Twitter.

With their debut album, Brand-new idol SHiT, scheduled for May, on March 25th, BiSH's first song, Spark, was released as a free digital single on Ototoy.

On April 3rd, Yukako Love Deluxe suddenly withdrew from BiSH. Her last-minute departure meant that an emergency recording session to replace her lines in Brand-new idol SHiT had to quickly be enforced.

In April, BiSH released a music video for the song BiSH: Hoshi ga Matataku Yoru ni, and more songs were released as free digital singles in the lead-up to the release of their debut album, Brand-new idol SHiT, on May 27th. By the time of the album's release, all tracks had been released for free.

On May 31st, BiSH held their first one-man live, THiS iS FOR BiS. During the show, they announced auditions for new members and a single to be released in September.

On August 1st, BiSH performed at Tokyo Idol Festival for the first time, however, their second day of performances was cancelled due to misbehaviour from their fans. The same happened to their sister group, POP. Despite this, both groups continued to be invited to Tokyo Idol Festival every year since.

On August 5th, Hashiyasume Atsuko and Lingling were announced as new members. Like the previous generation, their faces were obscured with contact lenses until they received more Twitter followers than Watanabe. However, Watanabe soon got impatient and lowered the follower amount to 5000.

BiSH's first single, OTNK, was released on September 2nd.

Towards the end of the year, BiSH's second album, FULL METAL JACKET, was announced with a planned release in January 2016. The album's name was later named to FAKE METAL JACKET. Like their first album, tracks from the album were gradually released as free digital singles leading to its release.


On January 19th, on the final show of their IDOL is SHiT Tour, they announced their major debut with Avex Trax in May. The next day, FAKE METAL JACKET, was released.

On May 5th, BiSH released their major debut single, DEADMAN. Just eleven days later, Hug Mii announced her graduation, citing family reasons. At the same time, auditions to find a replacement were announced.

Hug Mii graduated from BiSH on June 2nd.

On August 1st, new member Ayuni D joined the group. Like all previous members, her face was obscured until she reached 10000 followers, which eventually got pushed back to 15000.

On October 8th, BiSH held the finale of their LESS THAN SEX Tour at the famous Hibiya Outdoor Concert Theatre, their largest venue yet.

Two days later, on October 10th, BiSH's major debut album, KiLLER BiSH was released.

In late November, BiSH announced that they would go on hiatus for the rest of the year while Aina The End underwent surgery for vocal polyps. They ended their activities with the free concert, iN THE END on December 5th.


BiSH resumed activities in January 2017 with their sold-out BiSH NEVERMiND TOUR. All of their other concert tours for that year would also sell out.

BiSH's second major single, Promise the Star, was released on March 22nd.

On June 28th, BiSH released the mini-album, GiANT KiLLERS. The album included their first promotional tie-in song, "Shakai no Rule", used as the ending theme for the anime Heybot!.

On November 4th, BiSH had a surprise release of their second major album, THE GUERRiLLA BiSH. The album was released at a price of 299 yen without any prior advertising, and the surprise edition is packaged without cover art or a lyrics booklet, a reference to Kanye West's sixth album Yeezus. The album was eventually re-released with all the missing features on the 29th that same month.

On December 6th, BiSH, alongside other WACK groups, contributed on the shuffle album WACK & SCRAMBLES WORKS.

On December 30th, it was announced that BiSH had taken the top three spots in the first WACK General Election (Cent Chihiro Chittiii at #1, Aina The End at #2 and Ayuni D at #3).


In February, all members of BiSH cameoed in the music video for EMPiRE's "Buttocks Beat! Beat!".

On March 28th, BiSH's second major single and second promotional tie-in release, PAiNT it BLACK was released. PAiNT it BLACK was used as the opening theme to the anime "Black Clover", with EMPiRE providing the ending theme. Not long after, their next promotional tie-ins, Life is beautiful / HiDE the BLUE were announced, and they released a music video for Toumeina Mama de Yuke., a song recorded to promote the Kirin Lemon soft drink.

On May 22nd, BiSH concluded their concert tour at Yokohama Arena, their largest venue to date, and where BiS had previously held their disbandment concert.

On June 27th, BiSH released their double a-side single, Life is beautiful / HiDE the BLUE, alongside a surprise additional single, NON TiE-UP, which poked fun at their recent promotional tie-in songs.

Founding members Aina The End and Cent Chihiro Chittiii released the joint solo single, Youji to Tsuki no Hime / Kienaide on September 19th, as a reward for ranking first and second in the previous year's WACK General Election.

BiSH's sixth major single, Stereo future, was released on December 5th.

On November 26th, BiSH announced an ongoing web series, BiSH no Kirekkire JAPAN, to begin streaming on Yahoo! from December 3rd.

On December 18th, BiSH won a "Newcomer Award" at the Japan Record awards, after having been nominated a month prior.


On January 16th, BiSH featured on the Fist of the North Star 35th Anniversary Album "Lore".

BiSH released a digital single, Futarinara, on January 30th. The track was used as the theme song to the anime "3D Kanojo Real Girl".

On March 13th, BiSH featured on the track "Kanariya Sky" from Tokyo Ska Paradise's album "Rakuen Juusan Kei", and also took part in some performances with the group leading up to the album's release.

On April 1st, BiSH announced that they would have three consecutive linked releases; two mini-albums, STiCKS and CARROTS, followed by an album combining the two, CARROTS and STiCKS.

STiCKS was released exclusively on Apple Music on April 3rd.

On May 3rd, CARROTS was released, also as an Apple Music exclusive.

On June 12th, CARROTS and STiCKS was pre-released at Tsutaya and HMV stores for a limited time. This edition of the album had a fifty-fifty chance of being the official release, or a version recorded by Beat mints boyz.

CARROTS and STiCKS, was eventually released officially on July 3rd.

On August 7th, it was announced that BiSH were to be presented with a VMA award for the "Best Alternative Video" for Stereo Future. The award presented to BiSH at the MTV VMAJ Awards on September 18th.

On November 6th, BiSH released their second double A-Side single, KiND PEOPLE / Rhythm.


In early 2020, BiSH revived their old YouTube channel, which, since signing to Avex, had only been used for occasional short promotional videos. To celebrate, and to promote the release of their fifth live home video release, And yet BiSH moves., the entirety of their And yet BiSH moves. concert was live-streamed on January 19th. More full-length concert footage was temporarily added to their YouTube following show cancellations due to the COVID-19 outbreak.

In March, BiSH announced that they had recorded two new theme songs; "Buchinuke", to be used as the theme for the upcoming series, Super Radical Gag Family, and TOMORROW for the anime Kingdom.

TOMORROW was released as a digital single on April 13th.

May 27th was the five-year anniversary of the release of Brand-new idol SHiT. To commemorate this milestone, BiSH announced two releases scheduled for July:

The first, released on July 8th, is BiSH's first best-of album, FOR LiVE -BiSH BEST-. Intended as a thank-you to the live houses and CD stores that supported BiSH, all proceeds from this album will support music venues that are at risk of closure following the COVID-19 pandemic.

The second album, released on July 22nd, is BiSH's "3.5th major album", LETTERS. Originally intended as a single, it was expanded to an EP as a means of cheering up the fans who can not currently see BiSH in person due to Japan's restrictions on public events.

On July 15th, BiSH participated in a promotion with the food delivery company, Uber Eats, where members delivered orders to customers homes.

In September, BiSH participated on the Parabellum Bullet track, "Discommunication", from the latter's newest album, "CHAOSMOLOGY". They were also selected as models for Adidas' ABC-MART collection.

In early October, BiSH announced a collaboration with Call Of Duty: Mobile. In-game events "Call of Duty: Mobile x BiSH" and "Special Live -STORY OF DUTY-" were held, with players being able to view a live video in-game where a new song written specially for the game was performed. The song, STORY OF DUTY, was released as a digital single on October 28th.

BiSH released another home video release, TOKYO BiSH SHiNE6, on November 18th.


In January 2021 BiSH's song Promise the Star was certificated with Gold by the Recording Industry Association of Japan (RIAJ) for 100,000 digital downloads.

In late February, BiSH announced a new song, in case..., which would be the opening theme for the anime, "Godzilla SP".

On March 26th, BiSH released the digital single, STAR. Two weeks later, it was followed by ZENSHiN ZENREi, a theme song for the Renai Mangaka anime.

The day after ZENSHiN ZENREi's release, on April 9th, it was announced that AKB48 member Kashiwagi Yuki would be temporarily joining BiSH in the near future. Her addition marked BiSH's first lineup change in five years. Further details were released in May, revealing that she would be joining them for a single, to be released on August 31st.

In case... was released as a digital single on May 6th. Twenty days later, BiSH released a recording of their REBOOT BiSH oneman live, followed by the announcement of their fourth major album.

In early June, Kashiwagi Yuki halted all activities to recieve emergency surgery for Syringomyelia, and as a result, BiSH's single with Yuki was postponed indefinitely, along with the six other WACK singles including her.

BiSH's second tie-in for the Kingdom anime was announced on June 11th. The song, STACKiNG, will be released as a digital single on July 5th.

On August 4th, BiSH released their fourth major album, and first full-length album in two years, GOiNG TO DESTRUCTiON. While promoting the album, members Cent Chihiro Chittiii, Aina The End and Hashiyasume Atsuko all tested positive from COVID-19, and were required to quarantine at home. With half of the group on hiatus, this caused some disruptions to promotional activities, and eventually it was announced that all activities would be cancelled through the remainder of August. However, Momoko Gumi Company, Lingling and Ayuni D were permitted to resume activities after their tests for the virus came out negative.

Throughout August, BiSH collaborated with the upcoming PC and mobile game, "Ragnador", with their song BE READY used as its official opening theme. Additionally, the songs GiANT KiLLERS, KiND PEOPLE, S.H.I.T, SHARR, Hero Wannabe, Identity and NON TiE-UP were included as background songs. Ayuni D also recorded a solo song for the soundtrack, and Cent Chihiro Chittiii voiced a character in the game.

At the end of August, a statement was released confirming that Chittiii, Aina and Hashiyasume had all made a successful recovery from the coronavirus, and that the group could resume public activities from September 1st. Despite being quarantined at the time, some members were still involved in other entertainment activities (such as the aforementioned Chittiii voice role), likely recorded before their hiatus.

On September 17th, a new release date of November 30th was set for BiSH's single with Kashiwagi Yuki. The single, Kashiwagi Yuki Nari no BiSH-BAD TEMPER-, was released on November 30th.

BiSH held an "emergency" livestream, THiS is FOR BiSH, on December 24th. During the performance, BiSH announced that they would disband in 2023. Leading up to their disbandment, they announced their plans for a nationwide farewell tour and 12 months of consecutive releases.

On December 31st, BiSH featured on the prestigious NHK Kouhaku Uta Gassen, an end-of-year singing contest featuring the most popular musicians of the year. Past participants on Kouhaku have included major names such as Hamasaki Ayumi, Gackt and Yamaguchi Momoe. That same night, they unveiled the first three of their consecutive monthly releases.


The first of BiSH's consecutive monthly releases, FiNAL SHiTS, was released on January 12th. It was given a digital pre-release on January 1st. It was followed by Pyo on February 9th, and Aishiteru to Ittekure on March 3rd.

In late March, BiSH featured on the Kishidan tribute album, "All Night Carnival", performing a cover of "One Night Carnival".

The fourth of BiSH's monthly releases, Gomen ne, was released on April 20th. Soon after, they revealed their fifth, LiE LiE LiE, and opened a competition for fans to submit their own songs, of which the winner would be selected to become an official BiSH song before their disbandment. LiE LiE LiE was released on May 11th.

On June 10th, BiSH will released compilation movie, BiSH presents PCR is PAiPAi CHiNCHiN ROCK'N'ROLL, in theaters. The movie consists of six short films created by each individual member of BiSH.

Their sixth monthly release, Don'nani Kimi Ga Kawatte Mo Boku Ga Don'na Fuu Ni Kawatte Mo Ashita Ga Kuru Kimi Ni Au Tame, will was published on June 29th. Their seventh, SEE YOU, was released on July 27th. Just five days later, they announced and released the single, Sayonara Saraba.

From August 5th to 28th, BiSH held a two-part exhibition showcasing items and videos from their history, titled Bishou Hihokan EXHiBiTiON OF BiSH.

BiSH will feature in the upcoming smartphone game, WACK ROCKiN' PARTY, which is set to be released later in the year.


Music Videos



Live Video


Web Series


Smartphone Game

Card Game

Live Events


  • BiSH was the group that started the tradition of stage names in WACK. While there were members of BiS who performed with stage names before, BiSH was the first group to have every member perform under a pseudonym instead of simply their real name in katakana.
  • Are the most commercially successful WACK unit.
  • Are the only WACK unit where none of the members appeared in a streamed audition boot camp before joining.


External Links