The group consist of EXPG Studio graduates who starred in Takashi Miike's Girls × Heroine series.
In December 2015, Yuzuha Oda, previously a member of the idol girl group Amorecarina,[2] participated in the TV Girls Drama Audition held by Ciao, Pucchigumi, and LDH, winning a starring role in the 2017 series Idol × Warrior Miracle Tunes!
became successful, LDH held the TV Girls Drama Audition in summer 2017 for the next installment of the series, Magical × Heroine Magimajo Pures!, which Momoka Sumitani, Misaki Tsuruya, Youka Ogawa, and Kurea Masuda had won starring roles as Rin Shirayuki, Mitsuki Hanamori, Shiori Hoshina, and Yuria Nijiiro.
[11][12] Prior to entering acting, Sumitani, Ogawa, Masuda, and Yamaguchi were part of EXPG's U-14 female trainee group, Kizzy.
[12] As a group, Girls2 released their debut single, "Daijyoubu", on June 26, 2019, as the opening theme song for Secret × Heroine Phantomirage!
[20] In December 2019, Girls2 announced they will be performing the theme song, "ABCDEF Girl", for the film Gekijōban: Secret × Heroine Phantomirage!
[28][29] On March 3, 2020, Oha Suta announced they will be featuring a series of animated segments starring the members and titled GARUGAKU.
[30] It began airing on April 6 every Monday with Girls2 voicing their own characters, as well as providing the opening theme, "Centimeter".
[31] On March 6, 2020, Girls2 were announced to be performing the theme song to the live-action film adaptation of Kiss Him, Not Me, titled "Watashi ga Motete Dōsunda.
"[32][33][34][35] For the entire month of March, a project named "Ten Made Todoke" was held where a series of 10 announcements were to be released (later adding additional news).
Announcements included Girls2 appearance on Numa ni Hamatte Kiite Mita [ja], Mirage2 best album, Girls2 to provide ED theme "Zuttomo Heart Beats" for Go Astro Boy Go!
[37] Due to the coronavirus and music stores closing down, the release for their 2nd mini-album "Chuwapane", which was originally scheduled or April 29, was postponed to May 20.
Tsuruya and Yamaguchi were announced to become the newest regulars for the BS Fuji morning show "Gachamuku", where they replaced E-girls Yuzuna Takebe and Anna Ishii.
[47] On May 31, 2021, Masuda was revealed as one of the regular casts for the 5th instalment of the Girls x Heroine series Kirameki Powers, playing the role of Princess.
1" performed by Tsuruya and Masuda under the name Misaki Kurea from Girls2, which was used as the ending theme song to Puzzle & Dragons X for the month of October.
[56] The senior Oha Girls: Yuzuha, Momoka, Misaki, Youka and Kurea, graduated from the group in March 2021.