The formation of Bis came about in late 2010 when Pour Lui, a solo artist known as a "new-age rock icon", announced her intention to retire as a singer and instead form an idol group, for which she would personally audition members.
[4] Then, in March 2011, they released the album Brand-new idol Society, which included "Taiyou no Jumon" and a cover of "One day", a song originally by Pour Lui.
As a three-member unit, they released the single "My Ixxx", which gained notoriety due to its music video in which the members appear to be completely naked.
[9] That month, at Bis' solo concert "Idol is Dead", Yukiko Nakayama announced her intention to graduate from the group.
[10] Bis responded by releasing the song "Tofu", a free digital download, intended as a diss track for Nakayama.
2012 saw Bis, a three-member group for the second time, announce a new single, to be titled "Idol" (アイドル (aidoru)) and featuring a change in image.
Around the same time, a short anime series about Bis titled "Backstage idol Story" aired on Space Shower TV.
[17] Yurika was the center for the single, with a limited edition version of its CD including a photobook of her and the music video for its B-side "Hide Out Cut" devoted to documenting her time in the group.
Yufu Terashima departed soon after, although her split from the group was a less amicable one: Pour Lui openly writes in "BiStory: Who Killed Idol?
"JK" is understood in Japanese as a shorthand slang term for "joshi kousei", meaning a female high school student.
January 2014 saw Bis release the single "Stupig", a digital hardcore track produced by Takeshi Ueda of AA= and The Mad Capsule Markets.
The concert was the longest ever performed by the group, consisting of 48 songs (including guest appearances by former members Rio Michibayashi, Rina Yokoyama and Yukiko Nakayama).
It was announced in January 2015 that Junnosuke Watanabe, along with members of the team that initially conceived Bis would be putting together a successor group Bish.
On August 30, 2016, the Bis YouTube channel uploaded videos of eleven audition finalists: Koshouji Megumu, Maina The End, Tontonko, Bug Me, Nagayama Yukiko, Yokoyama Hina, Michihayashi Rio, Terayama Yufu, Cent Chihiro Tsuttsu, Second Summer Uika, and Hirano Nozomu.
This audition resulted in the addition of Maina The End, Koshouji Megumu, Yokoyama Hina, and Nagayama Yukiko, who adopted the stage names of Kika Front Frontale, Aya Eightprince, Go Zeela, and Peri Ubu, respectively.
When she is unable to do so, Watanabe announces his decision to suspend Lui from all Bis activities, including an upcoming one-man concert at Akasaka Blitz.
The now-deleted video generated an outrage from fans and non-fans alike, accruing several thousand dislikes in the space of a week and earning coverage on news sites including HuffPost.
[42] In response to the backlash, Pour Lui and Watanabe recorded a song titled "Best Friend" together, in which they apologise to fans for taking advantage of them, and thanking HuffPost for spreading the group's name.
[45] On February 20, Aya Eightprince returned from her rental period in Gang Parade, rejoining the group for their debut single from Crown Stones, "Whole Lotta Love / Dipromise", released March 7, 2018.
[46] In the middle of March, an audition was held to find new members for Bis, Bish, Gang Parade, and the newly debuted Empire.
Bis 2nd featured Kika Front Frontale, Peri Ubu, Aya Eightprince, with new members Mewclub (formerly Choushouji Megumi) and Muropanako (formerly Ayuna C).
On April 18, Momoland did not appear at Bis' scheduled show, sending a message to the other members that read "I can't go today."
After the voting period for "Against the Pain" had ended, the results were announced at the final date of the "I Don't Know What Will Happen Tour": Bis 1st was to consist of Go Zeela, Aya Eightprince, Kika Front Frontale and Peri Ubu, while Pan Luna Leafy, Mewclub, Nel Nehru, Yuina Empire, Muropanako, and Toriaez Hana were placed in Bis 2nd.
The results of the audition were publicly announced on the March 30 at the free WACK Exhibition event where Bis performed with the eliminated members.
[75] On March 25, it was announced that three new members, Changadult, Aika The Police, and Hitorikko, later known as Shion Epic, Iko Mugennokanata and Kurenai World's End, would join the group.
[83] Bis performed outside of Japan for the first time at a multi-artist WACK event alongside ASP and Mameshiba no Taigun Tonai Bousho a.k.a.
[87] Their music videos touch on themes such as point-of-view pornography and sexual violence, attracting both positive and negative attitudes from viewers.
Pour Lui noted that many are difficult to watch, and Avex staff member Ryuta Ochi explains "They [Bis] wanted to make a deliberate uglification of idol events.
The majority of Bis songs have lyrics written by the members themselves, After the group reformed, their image became less confrontational, albeit while retaining a darker, "alternative" theme.
The song, which exceeds 11 minutes in length and includes explicit references to irrumatio in the lyrics, incorporates elements of hardcore punk and noise, reminiscent of their earlier collaboratory efforts with Hijokaidan.