ONAGAWACK is an annual two-day festival taking place in the town of Onagawa in association with Onagawa's tourism board, starting in 2019. Its purpose is to help build the local economy, and involves all present WACK groups. The festival always happens during a joint WACK tour, in February.
As well as live performances, WACK artists will also hold "play" events where fanclub members can try out local activities with their preferred group. The first day will typically be a "LiVE DAY", where all artists perform, and the second a "PLAY DAY", when the play events take place. Almost every "play" event is exclusive to members of each group's corresponding fanclub (BiS-only events exclusive to BiS fanclub members, etc.), excluding the hide-and-seek event which involves every present WACK member and can be played by anyone.
In addition to the performances and events, exclusive merchandise is also sold during ONAGAWACK. As well as typical performance merchandise such as apparel, locally-made WACK group-branded products such as food and drink is also sold.
For the 2020 event, a one-day shuffle unit called ONAGAWACKSTARS was formed. It consisted of one member from every WACK group at the time who was selected by Onagawa locals. The members were Neo Trees (BiS), Aina The End (BiSH), Kamiya Saki (GANG PARADE), MAYU EMPiRE (EMPiRE), Pan Luna Leafy (CARRY LOOSE), Kaedephoenix (MAMESHiBA NO TAiGUN), and Naayu (WAgg). ONAGAWACKSTARS performed an original song entitled [ON A GOT WORK] on the February 8 LiVE DAY Concert at Onagawa Town Hall. They later performed this song at the Tokyo Idol Festival 2020 event WACK presents DREAMLIGHTS in TIF (sans Kamiya Saki, who had graduated from WACK in May).
2019 (Going Going WACK Tour)
2019.02.16: LiVE DAY
- Performances by all artists at Onagawa Town Hall.
2019.02.17: PLAY DAY
- Hide and Seek (all artists)
- Spanish Tile Painting (BiSH)
- Tea Party (BiS)
- Soap Workshop (GANG PARADE)
- Onagawa Bay Cruise (GANG PARADE)
- Head To A Minus 30℃ World With EMPiRE
Featured Members
- BiS: Kika Front Frontale, Aya Eightprince, Peri Ubu, Go Zeela, Pan Luna Leafy, YUiNA EMPiRE, Muropanako, Toriaez Hana, Mewclub
- BiSH: Cent Chihiro Chittiii, Aina The End, Momoko Gumi Company, Hashiyasume Atsuko, Lingling, Ayuni D
- GANG PARADE: Kamiya Saki, Yamamachi Miki, Yumeno Yua, Can GP Maika, Terashima Yuka, Yui Ga Dockson, Coco Partin Coco, Tsukino Usagi, Haruna Bad Chiiiin
- EMPiRE: YU-Ki EMPiRE, YUKA EMPiRE, MAYU EMPiRE, MiDORiKO EMPiRE, MiKiNA EMPiRE, MAHO EMPiRE
- WAgg: Utauuta, Marin Ba, Uruu Ru, Anzupia, Love, Naruhaworld, Sayaito, Hanaemonster
2020 (WACK FUCKiN' PARTY Tour)
2020.02.08: LiVE DAY
- Performances by all artists and ONAGAWACKSTARS at Onagawa Town Hall
- WAgg new members reveal
2020.02.09: PLAY DAY
- Hide and Seek (All members)
- Tea Party: BiS
- Sushi Tasting: CARRY LOOSE
- Tile Painting: GANG PARADE
- Onagawa Bay Cruise: BiSH and EMPiRE
- Soap Workshop: MAMESHiBA NO TAiGUN and WAgg
Featured Members
- BiS: Toggy, Ito Musensiteebu, Chantmonkee, Neo Trees
- BiSH: Cent Chihiro Chittiii, Aina The End, Momoko Gumi Company, Hashiyasume Atsuko, Lingling, Ayuni D
- GANG PARADE: Kamiya Saki, Yamamachi Miki, Yumeno Yua, Can GP Maika, Terashima Yuka, Yui Ga Dockson, Coco Partin Coco, Tsukino Usagi, Haruna Bad Chiiin, Naruhaworld
- EMPiRE: YU-Ki EMPiRE, MAYU EMPiRE, MiDORiKO EMPiRE, MiKiNA EMPiRE, MAHO EMPiRE, NOW EMPiRE
- CARRY LOOSE: Pan Luna Leafy, YUiNA EMPiRE, Uruu Ru, Yumeka Nowkana?
- MAMESHiBA NO TAiGUN: Hanaemonster, Nao Of Nao, Miyukiangel, Aika The Spy, Kaedephoenix
- WAgg: Utauuta, A Anzupia, Love, Sayaito, Naayu, Ainastar (New member reveal), Kila May (New member reveal)
- Kika Front Frontale (Not performing, instead running KiKA'S BAR popup store)
2023 (WE ARE ONAGAWACKERS!!)
After ONAGAWACK went on hiatus for three years due to COVID-19, it's return was announced in January 2023.
Featured Members:
- BiS: Toggy, Nano3, Hyuga
- BiSH: Cent Chihiro Chittiii, Aina The End, Momoko Gumi Company, Hashiyasume Atsuko, Lingling, Ayuni D
- GANG PARADE: Yamamachi Miki, Yumeno Yua, Can GP Maika, Terashima Yuka, Yui Ga Dockson, Coco Partin Coco, Tsukino Usagi, Naruhaworld, Kila May, Ca Non, Changbaby, Ainastar, Potential
- ExWHYZ: yu-ki, mayu, midoriko, mikina, maho, now
- MAMESHiBA NO TAiGUN: Hanaemonster, Nao Of Nao, Miyukiangel, Aika The Spy, Leonaempire, Momoti Ngale
- ASP: Yumeka Nowkana?, Nameless, Mog Ryan, Matilder Twins, Wonker Twins, CCCCCC, Riontown