Zutto Mayonaka de ii Noni. (Japanese:ずっと真夜中でいいのに。,lit. 'It would be nice if it was midnight all the time.'), shortened and stylized asZUTOMAYO, is a Japaneserock group that debuted in 2018. Secretive by nature, the group has never released a full member list, crediting different people for arrangements and music video production each time. The only member reoccurring in all of the group's output is the vocalist and songwriter, an unidentified woman referred to as "ACA-Ne" (ACAね,Akane^[1]).^[2]

Despite the little information released, the group is commercially successful. Zutomayo's threeEP's have reached 8th, 1st, and 2nd on theOricon Albums Chart, respectively. The group was also invited to perform at the2019 Fuji Rock Festival a year after their debut.^[3]

Aside from ACA-Ne, the vocalist, it is unclear how many people are in the band. ACA-Ne has never revealed her face, and the band have performed behind a translucent screen during concerts, including at the 2019 Fuji Rock Festival. Many have pointed to Zutomayo's secrecy regarding its members contributing towards its popularity.^[4][5] In more recent performances however, other members of the band have been less secretive, choosing to show their faces.

Zutomayo typically produces rock music, often featuring intricate, funk-inspired basslines. ACA-Ne's voice has been described as "energetic", "expressive", and "delicate".^[5][6]

The group debuted with the release of their first song, "Byōshin wo Kamu" (秒針を噛む), viaYouTube on June 4, 2018. The song became an immediate hit, garnering 200,000 views within the first week.^[2][7] Additionally, after being released on streaming platforms on August 30, the song became the most streamed song in Japan that week.^[8] Following the song's release, Zutomayo held their first concert at Daikanyama Loop in Tokyo. Attendees were handed opaque glasses and reported that the entire venue was dark for the concert's duration.^[7] The group would continue to conceal their identities in future concerts.

Zutomayo released two more singles digitally before releasing their first EP,Tadashii Itsuwari Kara no Kishō (正しい偽りからの起床), on November 14 throughEMI Records. The EP reached 8th on theOricon Albums Chart and was nominated in the19th CD Shop Awards.^[9][10] On June 5, 2019, a second EP was released titledIma wa Ima de Chikai wa Emi de (今は今で誓いは笑みで), which topped the Oricon chart.^[11] The group's first full-length album,Hisohiso Banashi (潜潜話), was released on October 30 of the same year.^[12] The song "Darken" was used in the live-action filmThe Night Beyond the Tricornered Window, and "Hypersomnia" is also featured in the film.^[13] The group releasedGusare (ぐされ) on February 10, 2021, featuring songs "One's Mind", "Can't Be Right", "STUDY ME", "Hunch Gray", "Have a", "Engine Oil", "Darken", "Milabo", "Loneliness", "Crop", "Hypersomnia", "Fastening", and "Inner Heart".

In October 2022, the group provided the song, "Time Left" (残機), for the second ending theme of the animeChainsaw Man.^[14] In October 2024, they provided the ending theme "Taidada" for the animeDandadan.^[15]

As of October 2024, Zutomayo has released five EPs and three full-length albums. Some songs contained in these albums were released digitally before the album's release.^[16]

• Official website(in Japanese)

• Musical groups established in 2018
• 2018 establishments in Japan
• Japanese pop music groups
• Japanese rock music groups
• EMI Records artists
• Universal Music Japan artists
• Female-fronted musical groups

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