Key of symbols for easy access:
Single released       – Album released      – Music video released      – Book/Magazine released
– Member joins      – Member leaves     – Group forms      – Group disbands     

●Pink – BiS   /   Blue – BiSH   /   Green – GANG PARADE   /  Purple – EMPiRE   /   Orange – WAgg   /   ●Grey – Other        

Pre WACK: Original BiS (Late 2010 – July 2014):
● Pour Lui announces plans to quit solo work to form an idol group on September 9, 2010, alongside manager Watanabe Junnosuke and producer Matsukuma Kenta.
Auditions were ran on October 7, 2010, held by Pour Lui and Matsukuma Kenta.
Founding members were announced: Pour LuiNakayama Yukiko, Yokoyama Rina, and Hirano Nozomi.
Brand-new idol Society] album released March 23, 2011.
[BiS] MV released February 22, 2011.
 [Paprika /パプリカ] MV released April 13, 2011. Features members headbanging and kissing.
Yokoyama Rina quits due to disagreements with direction of group, June 24, after hearing plans for [My Ixxx] MV.
[nerve] MV released June 29, 2011.
[My lxxx] MV released July 5, 2011. “Legendary MV” features members running naked through Japan’s Suicide Forest.
Terashima Yufu joins group, replacing Yokoyama Rina, July 9, 2011.
[My Ixxx] single released August 3, 2011.
[nerve] single released October 19, 2011.

■ [primal.] MV released November 14, 2011.
☆ Nakayama Yukiko quits due to disagreements, December 20, 2011.
[primal.] single released December 21, 2011.
[豆腐 / Tofu] single released January 31, 2012.
 [IDOL] MV released, April 9, 2012. Also released a fake, troll MV several days before.
[IDOL] single released April 11, 2012.
Signed to major label, Avex, and auditioned for new members.
 Two members added – Wakisaka Yurika and Michibayashi Rio. Both debuted April 15 2012.
 [PPCC] MV released June 19, 2012, featuring new members.
[PPCC] single released July 19, 2012.
First horror film released [IDOL is DEAD]. Didn’t feature two newest members are was recorded before their debut.
First and only anime series released [Backstage idol Story] aired on Space Shower TV.
[IDOL is DEAD] MV released September 17, 2012. 
[ASH] MV released October 3, 2012.
[hitoribochi] MV released October 23, 2012. Documents Pour Lui and Wakisaka Yurika during 100km marathon.
Member cleaning auction, November 19, 2012.
[GET YOU] MV released December 6, 2012, collaboration with Dorothy Little Happy. 
[IDOL is DEAD] album released October 24, 2012. 
[BiSimulation] MV released January 30, 2013. 
[Hide out cut] MV released March 12, 2013. Commemorates Wakisaka Yurika‘s time in the group.
Wakisaka Yurika left due to worsening health conditions on March 16, 2013, following the 100km marathon.
[BiSimulation] single released March 13, 2013. 
Terashima Yufu left the group on May 26, 2013.
 Pour Lui BiS autobiography [BiStory: Who Killed Idol?] where she spoke about her hatred of Terashima Yufu.
Following this, Pour Lui announces plans to disband BiS at sell-out Budokan performance to ‘go out as legends’. 
Three members added – Kamiya Saki, Tentenko, and First Summer Uika on May 26, 2013.
[DiE] MV released May 26, 2013. Video features themes of sex/rape.
[MURA-MURA] MV released June 24, 2013. Parody of Minami Minegishi shaved head indecent. 
[DiE] single released June 26, 2013.
 [好き好き大好き] MV released June 30, 2013. Original song by Jun Togawa.
[Fly] MV released August 15, 2013. Commemorates Michibayashi Rio‘s time in the group.
[Hi] MV released September 9, 2013.
[Fly/Hi] single released September 18, 2013.
Michibayashi Rio left group to build a stable career, September 22, 2013.
★ Junko Koshino announced to be life long honorary member, November 5, 2013. Oldest idol to ever debut at age 74.
New member announced November 15, 2013 Koshouji Megumi.
All members posted naked in forest, mimicking [My Ixxx] MV, in Quick Japan issue 111. NSFW image here.
 [STUPiGMV released December 2, 2013.
Second horror film released [IDOL is DEAD: Non-chan’s Great Propaganda War] January 11, 2014.
[ODD FUTURE] MV’s released January 14, 2014. Each member has their own special MV.
 [STUPiG] single released January 22, 2014.
 [primal.2] MV released January 30, 2014. Video features themes of prostitution.
Members featured in February 10, 2014 Weekly Playboy vol.6 posing for photo in black ink and fake semen.
Announced plans to disband at Budokan fell through due to BiS’s reputation, banning them from the venue.
 [Who Killed IDOL?] album released March 5, 2014.
[FiNAL DANCE] MV released April 29, 2014.
[FiNAL DANCE/nerve] single released May 28, 2014.
[nerve (2.5D x VICE)] MV released June 4, 2014.
 [うりゃおい!!! / Urya-Oi!!!] best of album released July 2, 2014.
[Budokan a la BiS] final live held at Yokoyama Arena on July 8, 2014. Previous members returned to perform [nerve] for the final time. Group disbanded.

WACK Officially Formed to Manage Pla2me and Future Groups (2014 – 2015):
Pla2me founding members Kamiya Saki, and Mizuta Mari
[Plastic 2 Mercy] single released September 4, 2014.
[UNIT] MV released December 8, 2014.
[UNIT] single released January 30, 2015.
BiSH formed early 2015. Announced to become the successor to BiS.
 Founding members Cent Chihiro Chicchi, Aina the End, Momoko Gumi Company, Hug Me, Yukako Love Deluxe.
Yukako Love Deluxe leaves group before debut due to anxiety.
[Brand-new idol Shit] album released March 27, 2015.

 Mizuta Mari left group March 31, 2015. 

[BiSH-星が瞬く夜に] MV released April 28, 2015.
Four members added May 31, 2015 – Inukai MaayaShigusawa Ao, Yumeno Yua, and Yamamachi Miki.
Pla2me changes name to POP.
[P.O.P] album released August 4, 2015.
[pretty pretty good] MV released August 4, 2015.
Two new members added August 14, 2015Hashiyasume Atusko and LingLing.

[OTNK] MV released August 14, 2015
[OTNK] single released September 2, 2015.
[ALL YOU NEED IS LOVE] MV released November 20, 2015.
[Happy Lucky Kirakira Lucky] MV released November 24, 2015.
 [Happy Lucky Kirakira Lucky] MV released December 8, 2015.

WACK cont. (2016):
[MONSTERS] MV released January 7, 2016.
♫ [Fake Metal Jacket] album released January 20, 2016.
[QUEEN OF POP] MV released March 7, 2016.
[QUEEN OF POP] single released
March 14, 2016.
[DEADMANMV released April 5, 2016.
[DEADMAN] single released May 4, 2016.
Hug Me left BiSH due to family circumstances June 26, 2016.
POP changes name to GANG PARADE.
[WE ARE the IDOL] MV released July 7, 2016.
[BiSBiS] MV released July 8, 2016,  Pour Lui only, to announce BiS will be reforming and auditions will start soon.
[BiSH x The LEGENDARY SIX NINE – CHAOS PARTY] single released July 17, 2016.
[WE ARE the IDOL] single released 
July 19, 2016.
Ayuni D joins BiSH August 2016.
 Shigusawa Ao left group due to lack of support from family August 8, 2016.
Reformed BiS audition live streamed over the course of 3 days in late August, 2016.
Reformed BiS founding members – Pour Lui, Go Zeela, Peri Ubu, Kika Front Frontale, and Aya Eightprince September 3, 2016.
The candidates who failed the BiS audition, were offered to be in rival group SiS. Founding members – Chin MireiCoco ChanelSion Sono, and Kanaboon September 3, 2016.
[Orchestra / オーケストラ] MV released September 9, 2016.
SiS disbands after just one live performance. 
☆ Inukai Maaya left group due to father’s declining health on October 2016, after being on hiatus since September 15.
[KiLLER BiSH] album released
October 5, 2016.
[本当本気] MV released October 5, 2016.
Can Maika joins GANG PARADE October 2016.
[CHANGE the WORLD] MV released October 27, 2016. 
[Barely Last] album released
November 8, 2016.
SiS members merge into GANG PARADE (minus Kanaboon) Yui Ga Dockson, Coco Partin Coco, and Terashima Yuka November 2016.
[Brand-new idol Society 2] album released November 16, 2016.
[Plastic 2 Mercy] single re-released December 27, 2016.

WACK cont. (2017):
♪ [Less Than SEX TOUR FiNAL “帝王切開’ 日比谷野外大音楽堂] single released January 18, 2017.
[gives] MV released February 14, 2017.
[Re:STUPiD] album released February 22, 2017.
[Promise the Star] MV released March 2, 2017.
[FOUL] MV released March 10, 2017.
[Promise the Star] single released March 22, 2017.
 WACK 2017 Audition live streamed
Rental trade announced between GANG PARADE’s Kamiya Saki and BiS’s Aya Eightprince
 BiS gained 2 new members – Pan Luna Leafy and Momoland. Both debuted April 2, 2017.
Project AW announced following WACK 2017 Audition
[FOUL] single released April 25, 2017.
[Romeo’s Heart] MV released April 30, 2017.
[SOCiALiSM] MV released May 9, 2017.
[Beyond the Mountain] MV released June 5, 2017.
[GiANT KiLLERSMV released June 12, 2017.
[GiANT KiLLERS] EP released June 28, 2017.
[Nothing.] MV released June 31, 2017.
[Beyond the Mountain] single released July 25, 2017.
◎ EMPiRE founding members announced on August 23, 2017 YUKA EMPiRE, YU-Ki EMPiRE, YUiNA EMPiRE, MiDORiKO EMPiRE, and MAYU EMPiRE.
[I can’t say no!!!!!!] MV released September 21, 2017.
SAiNT SEX super group founding members announced October 2, 2017 – Aina the End, Ayuni D, Pour LuiKamiya SakiAya EightprinceYumeno Yua, and Yamamachi Miki.
SAiNT SEX [WACK is FXXX] MV released October 2, 2017.

[THE GUERiLLA BiSH] album released October 29, 2017.
 [GANG PARADE] MV released November 1, 2017.
[My Landscape] MV released November 4, 2017.
 [イミナイウタ] MV released November 15, 2017.
■ beat mints boyz [Spark] MV released November 21, 2017.
[SMACK baby SMACK] MV released November 30, 2017.
[GANG PARADE takes themselves higher!!] album released November 21, 2017.
[アカルイミライ] MV released December 6, 2017.
[WACK & SCRAMBLES WORKS] album released December 6, 2017.
WACK General Election 2017

WACK cont. (2018):
[JAM] MV released February 2, 2018.
■ [BREAKING THE ROAD] MV released February 9, 2018.
■ [とろいくらうに食べたい] MV released February 16, 2018.
[WACK STORE @ Shibuya 109] February 19 – February 25, 2018.

[WHOLE LOTTA LOVE] MV released February 20, 2018. Aya Eightprince first video back in BiS
♪ [BREAKING THE ROAD] single released February 20, 2018.
[Buttocks Beat! Beat!] MV released February 22, 2018.
[DiPROMiSE] MV released March 3, 2018.
Pour Lui graduates from Reformed BiS March 4, 2018, marking the end of the rental trade between Kamiya Saki and Aya Eightprince.
WACK 2018 Audition & Exhibition live streamed March 12 to March 18, 2018.
Can Maika name changed to Can GP Maika, March 18, 2018.
GANG PARADE gains two new membersHaruna Bad Chiiiin and Tsukino Usagi
BiS gains 5 new members – Muropanako, Nel Nehru, Mewclub, Toriaez Hana, and Gamiya Saki
YUiNA EMPiRE is moved to BiS.
BiS splits into two groups, BiS1st and BiS2nd. BiS LEAGUE system begins – lineup is changed periodically via voting.  

Gamiya Saki quits before debuting.
EMPiRE gains two new members – MAHO EMPiRE and MiKiNA EMPiRE
[PAiNT it BLACK] MV released March 23, 2018.
[PAiNT iT BLACK] single released March 28, 2018.
[Black to the dreamlight] MV released March 31, 2018.
[HiDE THE BLUE] MV released April 3, 2018.
 [MAD LOVE] MV released April 11, 2018.
 [THE EMPiRE STRiKES START!!] album released April 11, 2018.
● [WACK MUSEUM @ HMV&BOOKS SHIBUYA] April 14 – May 6, 2018
[GANG 2] MV released April 16, 2018. Kamiya Saki first video back in GANG PARADE.
 Momoland quits after going missing for several days, April 20, 2018.
■ [FOR EXAMPLE??] MV released April 27, 2018.
[来了] MV released May 24, 2018.

[Life is beautiful] MV released May 28, 2018.

♪ [GANG 2] single released May 29, 2018.
[Life is beautiful / HiDE the BLUE] single released June 20, 2018.
[NON TiE-UP] MV released June 26, 2018.
[NON TiE-UP] single released June 27, 2018.
Yui Ga Dockson solo song [Like a virgin] MV released June 28, 2018.
 [Like a virgin] single released June 28, 2018.
Apologise First Campaign 
BiS1st and BiS2nd [Don’t miss it!!] MVs released July 1, 2018
 First BiS LEAGUE voting period July 4 – July 31, 2018, results of new lineup announced on last day.
● SAiNT SEX announced on July 20, 2018 that they’ll be performing at TIF. Go Zeela replaces Pour Lui.
HOLY SHiTS super group founding members announced July 26, 2018 – Peri Ubu Muropanako, Toriaez HanaCent Chihiro ChicchiCan Maika, MAHO EMPiRE
HOLY SHiTS [WACK is SHiT] MV released July 26, 2018.
BiS1st and BiS2nd [Don’t miss it!!] single released August 4, 2018.
WACK presents DREAMLIGHTS at Tokyo Idol Festival August 4, 2018.
[EMPiRE originals] MV released August 17, 2018.
WAgg training group founding members announced August 18, 2018 Marin Ba, Uruu Ru, Utauuta, Anzupia, Naruhaworld, Love, Sayaito, and Hanaemonster.
[S.O.S] MV released August 26, 2018.

■ [CAN’T STOP] MV released August 31, 2018.
[EMPiRE originals] album released August 5, 2018.

♪ [CAN’T STOP] single released September 11, 2018.
Cent Chihiro Chicchi and Aina the End joint solo single [Youji to Tsuki no Hime / Kienaide] released September 19, 2018.
Ayuni D solo project announced, PEDROSeptember 19, 2018.
PEDRO [自律神経出張中] MV released September 19, 2018.
[zoozoosea] PEDRO debut album released September 19, 2018.
 BiS1st and BiS2nd [Against the Pain] MVs released October 6, 2018.
NEGLECT ADULT PATiENTS, Watanabe Junnosuke‘s fashion line to hold runway show October 16, 2018.
Quick Japan Special Issue WACK Book October 20, 2018.
[stereo future] MV released November 8, 2018.
 Second BiS LEAGUE voting period November 13 – December 27, 2018, results of new lineup announced on December 29, 2018.
BiS1st and BiS2nd [Against the Pain] singles released November 14, 2018.
● Terashima Yuuka starts weekly film reviews for Storywriter November 20, 2018.
[stereo future] single released December 5, 2018.
 Blu-ray DVD [GANG PARADE oneman live at Zepp Tokyo], containing live performance and a bonus CD of re-recorded tracks, released December 11, 2018.
BiS ran a 100km relay marathon on December 19, 2018. Overall they failed so Watanabe announced that they would do another marathon as punishment, but later cancelled this stating that it was no longer interesting. 

WACK cont. (2019):
[LAST GANG PARADE] album released January 8, 2019.
Documentary of the 2018 WACK AUDiTiON, titled, “The World’s Saddest Audition” released January 11, 2019.
WACK’s first joint tour, featuring all main groups, “Going Going WACK” was announced November 13, 2018. There will be a total of 23 performances in 17 cities with the tour finale being held on March 17th, 2019.