Hikakin & Seikin
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Hikakin & Seikin | |
|---|---|
 Hikakin & Seikin performing in 2018 | |
| Background information | |
| Origin | Japan |
| Genres | J-pop |
| Years active | 2015–present |
| Labels | Uuum |
| Members | |
| Website | uuum.jp |
Hikakin & Seikin (stylized in all caps as HIKAKIN & SEIKIN) is a Japanese duo formed in 2015. The members are Hikakin and Seikin, who are known as YouTubers. Collaborator Japanese music producer TeddyLoid is mainly in charge of arranging the songs. Debuted with the self-produced single "YouTube Theme Song".[1] The CD was released by Uuum Records on November 21, 2015.
On August 14, 2015, Hikakin and Seikin, who were originally known as YouTubers, announced that they would make their debut as singers, and on the same day they independently released their first single, "YouTube Theme Song."[2] A CD+DVD edition was released by Uuum Records on November 21 of the same year.
On October 19, 2017, the 2nd single "Zasso" was released.[3][4] A CD version was released by Uuum Records on July 22, 2018.[5] The song reached number 19 on the Billboard Japan Hot 100.
The 3rd single "Ima" was released on November 18, 2018, and became a hot topic for its long, one-shot recording played in reverse.[6] It has also been viewed over 30 million times.
On December 19, 2019, the 4th single "Yume" was released. The music video was released on December 15. In addition, prior to the release of the Music Video, the song was performed at YouTube's major event "YouTube FanFest 2019 YTFF" (Creator Live Show) held at Makuhari Messe Event Hall on December 4. A live broadcast on YouTube was also held.[7]
In 2021, the 6th single "FIRE" will be released in conjunction with HikakinTV's 10th anniversary.[8]
On October 28, 2022, American a cappella group Pentatonix released the single "Last Christmas" featuring Hikakin & Seikin. The song is a cover of Wham!'s "Last Christmas", and the collaboration was realized when Pentatonix offered the song to Hikakin & Seikin.[9] The music video was released on December 14 of the same year.[10]
On August 14, 2025, they released their seventh single, "YouTube Theme Song 2." This song is a remake of the "YouTube Theme Song," released 10 years after the original.[11]
Discography
Singles
| Title | Year | Peak chart positions | Album |
|---|---|---|---|
| JPN Hot [12] | |||
| "YouTube Theme Song" | 2015 | 78 [13] |
YouTube Theme Song EP |
| "Zasso" | 2017 | 19 [14] |
Non-album single |
| "Ima" | 2018 | 43 | |
| "Yume" | 2019 | — | |
| "Hikari" | 2020 | ||
| "FIRE" | 2021 | ||
| "Call" | 2024 | ||
| "YouTube Theme Song 2" | 2025 |
References
- ↑ "HIKAKIN＆SEIKIN「YouTubeテーマソング」が配信スタート、プロデュースはTeddyLoid - CDJournal ニュース" [HIKAKIN & SEIKIN's "YouTube Theme Song" has started distribution, produced by TeddyLoid - CDJournal News]. www.cdjournal.com (in Japanese). Retrieved 2024-11-09.
- ↑ "YouTuber兄弟・HIKAKIN & SEIKINが歌手デビュー" [YouTuber brothers HIKAKIN & SEIKIN debut as singers]. 音楽ナタリー (in Japanese). Retrieved 2024-11-14.
- ↑ "ヒカキン＆セイキン新曲「雑草」 ガチ兄弟の支え合いに感動の声あがる" [Hikakin & Seikin's new song "Zasso" - Gachi brothers' support for each other is moving]. KAI-YOU | POP is Here . (in Japanese). 2017-10-20. Retrieved 2024-11-09.
- ↑ "意外に名曲？ヒカキン＆セイキン兄弟の新曲「雑草」" [Surprisingly famous song? Hikakin & Seikin brothers' new song "Zasso"]. ライブドアニュース (in Japanese). Retrieved 2024-11-09.
- ↑ "HIKAKIN＆SEIKIN、『U-FES.Museum』でシングル『雑草』発売 限定ステッカー封入も" [HIKAKIN & SEIKIN releases single “Zasso” at “U-FES.Museum” Also includes limited sticker]. Real Sound｜リアルサウンド テック (in Japanese). 2018-07-20. Retrieved 2024-11-14.
- ↑ "HIKAKIN & SEIKINが日本での「今」を大切にと歌う新曲、親友TeddyLoid参加（動画あり / コメントあり）" [HIKAKIN & SEIKIN sings a new song about valuing the “Ima” in Japan, featuring their close friend TeddyLoid (video included/comments included)]. 音楽ナタリー (in Japanese). Retrieved 2024-11-09.
- ↑ "ヒカキン＆セイキンの新曲「夢」、YTFF2019での初披露が決定！ 注目のMVは一体どんな内容に？" [Hikakin & Seikin's new song "Yume" will be performed for the first time at YTFF2019! What is the content of the attention-grabbing MV?]. Real Sound｜リアルサウンド テック (in Japanese). 2019-11-30. Retrieved 2024-11-14.
- ↑ "HIKAKIN & SEIKIN、熱い思いを火で表現（動画あり / コメントあり）" [HIKAKIN & SEIKIN express their passion with fire (video included/comments included)]. 音楽ナタリー (in Japanese). Retrieved 2024-11-09.
- ↑ "ペンタトニックス、HIKAKIN & SEIKINと「ラスト・クリスマス」カバー | Daily News" [Pentatonix covers "Last Christmas" with HIKAKIN & SEIKIN | Daily News]. Billboard JAPAN (in Japanese). Retrieved 2025-03-05.
- ↑ "ペンタトニックス、HIKAKIN＆SEIKINとコラボした"Last Christmas"のミュージック・ビデオが公開 | NME Japan" [Pentatonix releases music video for "Last Christmas," a collaboration with HIKAKIN and SEIKIN | NME Japan]. NME Japan (in Japanese). Retrieved 2025-03-05.
- ↑ INC, SANKEI DIGITAL (2025-08-14). "ヒカキン「心から、ありがとう」 意味深予告の動画内容にファン「10年後に…熱い！」「神すぎる」" [Hikakin: "Thank you from the bottom of my heart." Fans react to the meaningful preview video with comments like, "10 years from now... so hot!" and "so divine."]. サンスポ (in Japanese). Retrieved 2025-09-01.
- ↑ "HIKAKIN & SEIKIN | Billboard JAPAN". Billboard Japan. Retrieved 2024-11-10.
- ↑ "Billboard Japan Hot 100". Retrieved 2024-11-10.
- ↑ "Billboard Japan Hot 100". Retrieved 2024-11-10.