is a Japanese songwriter and Vocaloid producer. As an independent artist, he produces the lyrics and music for each of his songs under his own record label, "Kikuo Sound Works," often with vocals provided by popular Crypton Future Media voicebank, Hatsune Miku. His unique style of music production is characterized by detailed, high-tempo sound design, with several overlaying instruments and effects to create colorful and upbeat harmonies, often juxtaposed by unsettling lyrics.
Additionally, Kikuo is best known for his song, which surpassed 100 million streams on Spotify in January 2023 and 110 million views on YouTube in July 2025, the first Hatsune Miku song to achieve this feat. Kikuo is also known for his songs "You're a Useless Child" and "I'm Sorry, I'm Sorry".
Kikuo credits experiences in elementary school for inspiring him to be a creator, recalling how bullies would stop harassing him to take an interest in his creative works, such as "gamebooks," with some even calling him talented and lucky to have such creativity. In a 2023 interview with Japanese web magazine Freezine, Kikuo specifically discussed how bullying shaped his worldview and motivation to create:
<blockquote>Going back a long way, when I was in elementary school I was being bullied, but when I showed them a gamebook that I made by myself, they were like, "You're amazing," and the bullying stopped temporarily when I was playing with the gamebook, but as soon as I took the gamebook away, the bullying started again. From that situation, I realized, "Oh, I can't survive in this society without creativity," and in middle school I thought I had to find something I was good at, anything creative, so I tried a lot of different things, but I couldn't do the things I wasn't good at...There were a lot of things I didn't have, and I got bored very easily, so I got bored of everything, and in the end, the only thing I didn't get bored of was DTM.</blockquote>
Though Kikuo initially used his creativity to evade school bullies, he concluded that creativity would be necessary to survive in society, too. His passion for (DTM) led him to start creating music in 2003, uploading songs to 2channel while still in middle school. Noticing little interest in his early works, bright and flashy pop songs with dance tempos, he investigated the Vocaloid genre. Kikuo told Freezine that songs with more grotesque themes experienced greater success, leading him to make darker pieces himself.
Kikuo published his first Vocaloid song in 2010, followed by his 2011 debut studio album, Kikuo Miku. In 2016, he performed alongside other acts at Dwango's annual (Japanese: , ) in Saitama Super Arena. Kikuo's work gained popularity, even being featured in the high school textbook, "High School Music 1" (Japanese: ), as part of a section covering the Vocaloid genre. His song "Six Greetings" was referenced in the textbook along with a lead sheet featuring lyrics and notes from the song. Kikuo was also featured in a documentary by the about Hatsune Miku. As of 2024, Kikuo has created more than a dozen albums and worked with various shows, film projects, games, and other media (see Affiliated works below). His three most streamed songs include:
The three songs belong to Kikuo's 2013 album Kikuo Miku 3 (Japanese: ), and have amassed over 340 million streams collectively on Spotify, as of 2025. "Love Me, Love Me, Love Me" in particular surpassed 100 million streams on Spotify in January 2023, making it the first Vocaloid song to achieve this feat, and most streamed song in the Vocaloid genre as a whole.
Kikuo's production process is well documented, having been recorded and highlighted in the 2012 "Miku Creator's Project" on Google+, and also on the online education website, Coloso. He uses a wide range of known and unknown instruments, effects, plugins, vocal synthesizers, and is known for using unorthodox samples such as crushing fruit, wrenches and machinery, squeaks of toys, and even sounds of childhood classrooms to enhance the settings of his songs. Preferring not to use MIDI keyboards to arrange notes, Kikuo points and clicks with a touchpad and mouse. When asked in an interview with music magazine, Plug+, about how he chooses sounds to set his music apart he replied, "The philosophy I always follow when choosing sounds is that 'beauty is consistency'...For example, I believe that an orderly arrangement of bricks is more beautiful than a jumble of stones. In music, we feel that something is beautiful when the notes are arranged according to certain rules."
Japanese and Chinese software-voicebanks (colloquially referred to as Vocaloids) provide the main vocals and ad-libs in most Kikuo songs. Recurring Vocaloids used by Kikuo include the popular virtual idol, Hatsune Miku from Crypton Future Media, and Qi Xuan (Mandarin: ) from Beijing TimeDomain Technology's ACE Virtual Singer (Mandarin: ). He has also made demo songs for various Vocaloids running on the Vocaloid 3 engine, including Tone Rion (Japanese: ), IA (Japanese: ), and Anri Rune (Japanese: ) (see Demo songs below). In addition to Vocaloids, Kikuo has also worked with traditional human voices as in the case of his lower-tempo, collaborative album Kikuo feat. si_ku, where his friend and repeat album cover artist, "si_ku", provided vocals.
Kikuo uses Studio One as his preferred DAW with VST plugins for instruments (VSTi) and effects (VSTfx). For VSTi, he is known to use Omnisphere, Kontakt, Massive, and Addictive Drums. For VSTfx, he is known to use Fabfilter, Glitch Machines, Waves Signature Series, Ozone, and Komplete. Additionally, Kikuo acquires samples from Splice and Loopcloud, utilizing the software "Reference4" for acoustic corrections. His hardware preferences include the A7X Active Studio Monitor speaker from ADAM Audio in conjunction with Focal's Clear MG Pro headphones. When asked by Plug+ about an effect he considers best for Vocaloid, Kikuo replied, "It's a pitch shifter. I think there's no point in using detailed and complicated effects because it won't be conveyed anyway. That's why I'm focusing on how to use old-fashioned retro plug-ins dynamically."
Kikuo's music typically has lyrics exploring heavier topics. A recurring motif in Kikuo's most popular songs is that of the problem child, accompanied by lyrics which explore themes of suffering, escapism, and trauma. Kikuo often uses bright melodies, audio samples of toys, and the youthful voices of Vocaloids to juxtapose the dark subject matter of his songs.
Works and side projects unrelated to Kikuo's mainstream discography are found below:
In addition to the above works, Kikuo has also supported various media projects including games, TV shows, movies, promotional content for Yamaha's Vocaloids (see Demo songs above), and musical productions by other artists. His roles across these projects include lyricist, composer (writing and arranging), audio master, mixer, etc. Projects where Kikuo is not the focus, and involvement is limited, are listed below:
Concert tours
In an interview with Plug+, Kikuo explained his motivation for touring overseas, "I knew I had fans all over the world, so I thought 'I can do it' [laughs]. I don't think a Vocaloid producer has ever performed overseas, so I wanted to do something unknown that no one has ever done before."