is a Japanese musician and singer-songwriter. He currently belongs to , a sublabel of Avex Inc. Before 2017 he made music using Vocaloid and other related software under the name .
Life and career Early life and beginnings Keina Suda started playing drums in junior high. He wanted to be a studio musician and attended the Kunitachi College of Music, but soon dropped the drums in favor of the guitar. Feeling the limits of pursuing a career as a drummer, he sold all of his drum equipment, purchased a personal computer and a guitar, and taught himself songwriting. 2013–2016: Vocaloid career as Balloon In April 2013, about a month after he began composing, he uploaded his first work, "Zōkeigai" (造形街), to Nico Nico Douga. Starting in 2013, he began composing Vocaloid music under the name Balloon. In October 2016, he uploaded his most famous song, "Charles" (シャルル), which has been covered by several other singers, including Ado. 2017–2019: Transition to Keina Suda and major debut In October 2017, he announced he would start activities as a singer and songwriter under the name of "Keina Suda", a name closely resembling his real name. On January 31, 2018, he released his first album under the name Keina Suda, titled Quote. In March of the same year, he performed his first solo live concert at Shibuya WWW.
On January 16, 2019, he released his first EP under the title Teeter through unBORDE (a label under Warner Music Japan), marking his major debut.
On August 21, 2019, his second EP Porte was released. The EP featured "Moil", used as the theme song for the Ni no Kuni movie, and "veil", used as the ending theme for the anime adaptation of Fire Force. The release of Porte also coincided with his entire discography becoming available on subscription streaming services. 2020–2022: Billow and continued Vocaloid success His single "Alba" was released on June 5, 2020, serving as the theme song for the movie Wednesday Disappears. In December 2020, he released the music video for a new Balloon Vocaloid song, "Setsuna no Uzu" (刹那の渦), followed by a self-covered music video under his Keina Suda name. Both versions were later included on his first major album.
On February 3, 2021, Suda released his first major studio album, Billow. The album included 15 tracks, such as "Yururu", the theme song for the film The Endroll of the Nameless World, and a self-cover of "welp", a song he had previously provided to Shingo Katori.
In October 2021, he released the Vocaloid song "Pamela". The song achieved "Vocaloid Legend" status (1 million views on Niconico) in just 17 days, marking the second-fastest time to do so at that time. On March 28, 2022, he released the Vocaloid song "Nomad", which was written for the circle "25-Ji, Nightcord de." in the game Project Sekai: Colorful Stage! feat. Hatsune Miku. It became the first Vocaloid song to reach Legend status in 2022. In October 2022, "Pamela" won the special "Daisy Bell Award" at the MTV VMAJ 2022. 2023–present: Ghost Pop, Fall Apart, and recent activities On January 26, 2023, Suda announced his second major album Ghost Pop, which was released on May 24, 2023. The album featured 14 tracks, including "Mellow", the opening theme for the anime Skip and Loafer, as well as "Koi Kumo" and "Rakkaryūsui", which were used in the films To Every You I've Loved Before and To Me, the One Who Loved You. To support the album, he embarked on his first national tour, "Keina Suda TOUR 2023 'Ghost Pops'". In May 2023, he made his first appearance on the YouTube channel The First Take, performing a self-cover of "Charles" and his new song "Darling".
On January 8, 2024, he released "Utopia", written as the opening theme for the second season of the anime Tsukimichi: Moonlit Fantasy. Later that year, he released "April" for a d Anime Store commercial, and "You & Me" as the theme song for the drama I Fell in Love With All My Classmates. From June to July 2024, he held the "Keina Suda HALL TOUR 2024 'Artless'". In late 2024, he hosted his first split-bill event "MINGLE", inviting the bands Hitorie and Natori. During the event with Hitorie, he surprise-announced a collaboration song under his Balloon alias titled "WOLF", which was released on December 11.
On March 26, 2025, he released "Mirage", another song for the d Anime Store campaign. On April 16, 2025, he released the album Fall Apart, which featured five new arrangements of his classic Balloon songs by various artists who respect his work, alongside "WOLF". On April 19, he held his first open-air concert "Keina Suda LIVE 2025 'Kakasumi'" at the Hibiya Open-Air Concert Hall, performing 20 songs including the new track "Meme".
Throughout 2025, Suda continued releasing theme songs for various anime and media. On July 16, he released "Last Look", the opening theme for the rebroadcast of Assassination Classroom. On August 20, he released "Love" (ラブル), the opening theme for the anime I'm in Love with You. On October 1, to celebrate the 5th anniversary of Project Sekai: Colorful Stage!, he collaborated with syudou under the name syudou × Balloon to release the Hatsune Miku and flower duet "Pentatonic".
On November 19, 2025, he released the single "Meme". The music video was created by Avogado6, who notably distributed the raw video materials for fans to use until March 2026. A duet video of "Pentatonic" featuring syudou and Keina Suda was released on December 25, 2025.
On January 14, 2026, Suda released "Libera", the opening theme for the TV Tokyo drama Oretachi Bad Barbers. On January 25, he participated in syudou's "PENTATONIC" event at the Yokohama BUNTAI.
Discography Music released as Balloon Albums Release dateTitleTracklistRemarksIndie (U & R Records)1st25 April 2015apartment12 songs
2nd21 August 2017corridor10 songs
esse anthosyan
EP Release dateTitleTracklistRemarksIndie (U & R Records)1st30 April 2016Marble8 songs
Unseen
Split album Release dateTitleTracklistRemarksIndie (U & R Records)1st30 April 2017facsimile6 songs
cover by balloon krank balloon cover by balloon felis lupus cover by uki3 cover by uki3
Music released as Keina Suda Singles Release dateTitleRemarksFirst AlbumMajor (Unborde)1st24 January 2020Theme song for the Fuji TV drama "Alive: Oncologist's Medical Record".Billow2nd24 April 2020MUG3rd5 June 2020AlbaTheme song for the movie "Wednesday Disappears."4th15 July 2020Carol Albums Release dateTitleTracklistRemarksIndie (U & R Records)1st31 January 2018Quote10 songs
morph
idid Cambell
Major (Unborde)2nd3 February 2021Billow15 songs
Vanilla
Alba veil Carol
MUG
MOIL
welp
The song "Alba" is the theme song of the movie "Wednesday Disappears." The song "Veil" is the ending theme of the first season of Fire Force. The song "Carol" was featured in NHK's Minna no Uta. The song "Moil" was the theme song in the Ni no Kuni movie. The song "Harudonari" was the theme song of Alive: Oncologist's Medical Record. The song "Loose" is the theme song of the upcoming movie The End of the Tiny World.3rd24 May 2023Ghost Pop14 songs
(self cover)
Howdy (self cover)
The song "Mellow" is the opening theme of Skip and Loafer The song "Love the Clouds" is the theme song for the film To Every You I've Loved Before The song 'Rakka Ryusui' is an insert song of the anime film To Every You I've Loved Before
EP Release dateTitleTracklistRemarksMajor (Unborde)1st16 January 2019teeter6 songs
mock
farce Dolly
2nd21 August 2019porte5 songs
References