Backing vocalist and fellow guitarist Shinoda joined in 2012, and the band renamed to its current name the same year.

In an interview with Natalie, wowaka disclosed that after releasing "Unhappy Refrain", he became mentally exhausted and distanced himself from the scene to protect his well-being, feeling that the pressure for fame and success had overshadowed the authenticity of the music.

[35] He met Yumao and ygarshy online later that year and formed the band, previously named "hitori atelier" (ひとりアトリエ).

The same day, they announced their major debut under their own label, "Hinichijou Records (非日常レコーズ)", under the Sony Music umbrella.

[39] On January 22, 2014, they released their first major single "Senseless Wonder (センスレス・ワンダー)", which played in radio stations all over Japan and was selected for FM802's heavy rotation.

[36] wowaka described the mini-album's title as "This is the easiest way to express “this is what we sing and play” and “this is the root of what we do as a band and music”.

"[40] In April, they performed a one-man tour in Tokyo, Nagoya and Osaka, named "Mannequin in the Park (マネキン・イン・ザ・パーク)", which sold out all venues, including the Ebisu LIQUIDROOM, one of the most popular live houses in Shibuya.

[44] On the same month, they held their one-man tour "Talkie Dance and Red Shoes (トーキーダンスと赤い靴)", with an additional performance in Sendai.

[46] On January 27, their 3rd single "One Me Two Hearts (ワンミーツハー) (stylized as one-Me two-Hearts)", was released as the opening theme for the anime series "Divine Gate (ディバインゲート)".

[47] The anime received mixed reviews by fans and critics alike, citing a convoluted story and disappointing adaptation.

[55] The album's title, stylized in English, is based on the japanese word "生きる", which means "to live".

This human liberation inevitably led to the full flowering of his potential as a musician and expressive artist.

[56] On August 22, 2017, wowaka released his final vocaloid song, "Unknown Mother-Goose" (アンノウン・マザーグース) for Hatsune Miku's 10th anniversary compilation album Re:Start.

[62] The title is a double entendre, as it can be interpreted as "isolate" or "愛 ("ai", love in Japanese) so late".

[62] As promotion for the album, all tracks, excluding Unknown Mother-Goose, and "Zettaiteki (絶対的) (Absolute)",[note 2] had short music videos released by the members on social media.

[66] Shimada's comment on the video:"The color pink was the only prompt I received, so my initial inspiration was to use the hues of skin.

With closeups on the tonality of the girl’s skin, and the combination of soft-colored flowers… The video turned quite feminine, yet still with a slightly bare and ominous aura to it.

"[73][74]On January 17, 2018, Hitorie performed alongside UNISON SQUARE GARDEN on their two-man live "nexUs Vol.4" at Akasaka BLITZ.

[78] On October 28, their fourth single "Polaris" (ポラリス) was released as the seventh ending theme for the anime series Boruto: Naruto Next Generations.

[80] Shinoda said in an interview that the song was one of his favorites and the one that he wanted to play live the most, however wowaka, exhausted from the release of "Unhappy Refrain", neglected the idea.

[83] On the talk and listening party to commemorate the album's release, Yumao revealed that, unlike all their other songs, "SLEEPWALK" was produced solely by wowaka.

[87] They cancelled their previously announced tour and offered refunds to all concert-goers, and said the band's future was "currently undecided".

Everyone will be in the audience, and when the leader of the band, waving his right hand, makes a huge sound, the happiest time of my life will begin.

[106] The album contained their previously released singles, "3 min 29 sec", "Stereo Juvenile" and "Kaze, Hana".

[109] On December 2, a one-man live named "Roomsick Girls Escape 10 Years Later (10年後のルームシック・ガールズエスケープ)" was held at Shibuya CLUB QUATTRO to commemorate the 10th Anniversary of their indie debut.

Shinoda wrote the lyrics and music, and describes the title and song as "the feeling you get when playing an electric guitar."

[113] On January 22, 2024, Hitorie released the single "SENSE-LESS WONDER AFTER 10 YEARS (10年後のセンスレス・ワンダー)", to celebrate the 10th anniversary of their major debut.

[114] The same day, a new artist photo of the band was released, and on the 23rd and 24th, the "HITORI-ESCAPE 2024 ～10-NEN-SAI～ (Tenth Anniversary)" concerts were held.

It also features comments by the band members, and fellow vocaloid producers and friends, such as Kenshi Yonezu, Jin, Pinocchio-P, and Tabuchi Tomoya of UNISON SQUARE GARDEN.

[124] The CD release will feature another unreleased song by him, named "daybreak seeker" which was written during the production of the album "HOWLS", and Hitorie's covers of "World's End Dancehall (ワールズエンド・ダンスホール)" and "Tenohira (テノヒラ)".