ΦKushiΦ (Φ串Φ) is among the earlier group of female utaite, having started in December 2007.
She has a soft and feminine voice that has a certain, slight roughness in it, but can become very smooth depending on the song, like in her piano version of Just Be Friends .
Her voice range is fairly wide, and she is well-known for her distinctive falsetto and whisper voice. Her voice's distinct beauty has caused many of her videos to be tagged with "futsukushii" (ふつ串い), which is "futsukushii" (ふつくしい, beautiful) written differently, forming a pun with her name.
She mainly covers VOCALOID songs, along with some anime and Sound Horizon songs.
Her first cover was Melt , and her most known solo-cover is of Just Be Friends with over 337K views as of July 2025. Over the years she has become inactive. The last song she covered as an utaite was MikitoP's Shoujo Rei in 2021 on her Youtube channel, still retaining her beauty.
Although she is far more popular as an utaite, she also was active as a producer for the group Team Aburitoro-don from 2008 to 2011. She wrote the lyrics and composed the songs, while the arrangements were done by Sashimi (さしみ) and the videos by Shari (しゃり).
With regards to Touhou doujin arrangements, she has been part of Rumdarjun's circle RegaSound, where he writes lyrics and sings songs, and also releases the versions of those sung by her. In other doujin work she has also sang the rock ballad duet song Yowasa with Hanatan in 2015, as part of the doujin circle minnasankaproject (みんな参加プロジェクト), and Noroi no Emerald with Meramipop as part of Diao ye zong.
Affiliations and Collaboration Projects[]
- Member of G.W. Nicolai
- 10 SUMMERS (Released on August 15, 2009)
- Nico Nico Omnibus Tour (Released on March 31, 2010)
- Touhou Vocal Valkyris (Released on August 14, 2010)
- Trasognata (Released on November 14, 2010)
- SUPER VOCALO BEAT (Released on June 01, 2011)
- Alternative (Released on June 12, 2011)
- The Waltz of Anomalies (Released on September 28, 2011)
- -Saiya01- (Released on November 09, 2011)
- Multiplex Tale with F9 (Released on December 31, 2012)
- MDML - MOtOLOiD DANCE MUSIC LIBRARY - (Released on December 31, 2013)
- Nijiiro Orchestra 2 (Released on December 31, 2013)
- Nijishoku Orchestra ~Grand Symphony with Full Orchestra~ in Tokyo Kokusai Forum (Released on August 16, 2015)
- Tensei Zesshou Index -Best Of Utattemita- (Release on December 23, 2015)
List of Covered Songs[]
- "Melt" (2007.12.28)
- "Aquarion" (2007.12.29)
- "EX-GIRL" (2008.01.27)
- "Nayuta no Kanata Made" (2008.01.28)
- "Yuki no Shizuku" (2008.02.11)
- "Saika" (2008.02.12)
- "Gekka no Hime Uta" -Len ver.- (2008.02.13)
- "Gekka no Hime Uta" -Miku ver.- (2008.02.13)
- "Sakura no Ame" (2008.03.11)
- "Ark" (2008.03.24)
- "Melt" -Band Edition- (2008.03.25)
- "Sakura no Kioku" (2008.03.27)
- "Cantarella" ΦKushiΦ Puchi (2008.03.30)
- "Love*3" (2008.04.27)
- "Harukaze" (2008.04.30)
- "Nemuri Hime" (Sleeping Beauty) (2008.05.03)
- "Onaji You ni" ΦKushiΦ Puchi (2008.05.08)
- "Terakazoku" (2008.05.19)
- "Salvage" (2008.05.23)
- "Aku no Metsushikai" (Servant of Evil) (2008.05.30) (Deleted)
- "Hato" ΦKushiΦ Puchi (2008.06.01)
- "Hiiro no Fusha" (2008.06.22)
- "Sad Song" (2008.06.28)
- "Black★Rock Shooter" (2008.07.01)
- "World is Mine" (2008.07.01)
- "Asa to Yoru no Monogatari" (The Story of Morning and Night) (2008.08.07)
- "Densora Shoujo" -Azuki ICE ver.- (2008.08.15)
- "Fire◎Flower" (2008.08.15)
- "Monochro Act" (2008.08.18)
- "Sayonara Astronaut" (2008.08.27)
- "Cendrillon" ΦKushiΦ Rumdarjun (2008.09.14)
- "Sayonara Astronaut" -retake- (2008.09.23)
- "Yume Ichiya" (One Night's Dream) (2008.10.20)
- "Sekiranun" (2008.11.30)
- "Message in our silence" (2008.12.09)
- "Roshin Yuukai" (Nuclear Fusion - Meltdown) (2008.12.23)
- "Packaged" (2008.12.29)
- "Hajimete no Koi ga Owaru Toki" (When the First Love Ends) (2009.01.08)
- "STEP TO YOU" (Part of the Utaite Connecting Album ~ 2009 Spring ~) (2009.04.26)
- "from Y to Y" (2009.05.17)
- "Migikata no Chou" (Butterfly on Your Right Shoulder) (2009.06.02)
- "Just Be Friends" -Piano ver.- (2009.07.29)
- "Hajimari Flight" (Part of the Utaite Connecting Album ~ 2009 Summer ~) (2009.08.09)
- "Kodoku no Hate" (2009.08.13)
- "Kimi no Shiranai Monogatari" Shouta ΦKushiΦ (2009.09.07) (Deleted)
- "Last Scene" (Part of the Utaite Connecting Album ~ 2009 Autumn ~) (2009.11.01)
- "Futa Iro" (2009.12.01)
- "ACUTE-Reverse" ΦKushiΦ Beeeeige Kettaro (2009.12.11)
- "Senkou" ✨Original (2009.12.12)
- "Niji - hand in hand" (2009.12.29)
- "Polaris" (2010.01.31)
- "Alice" (2010.02.07)
- "sexual demands" ΦKushiΦ Nata de Cocoline (2010.02.25)
- "Shinitagari" (2010.03.09)
- "Sakura no Zenya" (Sakura Last Night) (2010.04.20)
- "W-B-X ~ W-Boiled Extreme" ΦKushiΦ Beeeeige (2010.05.02)
- "Marygold" (2010.06.26)
- "Starduster" (2010.07.22)
- "Mozaik Role" (2010.07.28)
- "Kokyuu" (2010.08.18) (Community only)
- "Perfect Crime" ΦKushiΦ Nata de Cocoline (2010.11.29)
- "Hitori" (2010.12.20)
- "Sound" (2010.12.31)
- "Kagefumi Etranger" (Shadow-Treading Stranger) (2011.02.03
- "GOLD" G.W. Nicolai (2011.04.15)
- "Melancholic" (2011.05.03)
- "Yume Chizu" (Dream Map) (2011.06.01)
- "FLARE" (2011.08.14)
- "Shiryokukensa" (Eye Examination) (2011.09.16)
- "Kimi ni Tsumugu Shirabe" (2011.12.04)
- "Tell Your World" -Band Edition- (2012.03.16)
- "Gensouka" (Illusion Song) (2012.04.18)
- "Puzzle" (2012.08.07)
- "Fairytale" (2012.08.21)
- "WAVE" (2012.10.02)
- "Tokyo Cyber Detective Brigade" Kakichoco Reji clear ΦKushiΦ Vivienne Ritsuka Ten (2012.10.16)
- "Bungaku Shounen no Yuuutsu" (The Melancholy of the Literary Boy) (2013.02.03)
- "bouquet" (2013.03.08)
- "Ame to Asphalt" (Rain and Asphalt) (2013.03.27)
- "Mousou Zei" (2013.09.21)
- "Prodigy no Yuushuu" (Melancholy of Prodigy) (2013.10.12)
- "Otogibanashi" (2013.12.02)
- "Shounen to Mahou no Robot" (2013.12.29)
- "Haru ni Ichiban Chikai Machi" ΦKushiΦ Eichipiyoko (2014.04.08)
- "For the First Time in Forever" -Japanese ver.- (2014.04.24)
- "Kinyoubi no Ohayou" (Friday's Good Morning) (2014.09.04)
- "Yoru mo Sugara Kimi Omou" (All Night Thinking of You) (2014.12.29)
- "After Trick" ✨OriginalS.A.S.U.L (2015.07.19)
- "CHAIN" ✨OriginalS.A.S.U.L (2015.07.31)
- "HEAVEN" (2015.09.06)
- "Maemuki ni Warae" (Laugh Positively) (2015.12.18)
- "Arouse" ✨Original (2015.12.28)
- "Alien Girlfriend" (2016.03.27)
- "Chururira-Chururira-Daddadda!" (2016.04.14)
- "Tokimeki Experience" (2017.03.10)
- "Welcome to Japari Park" -band arrange- (Kemono Friends OP) (2017.06.12)
- "Hatsune" (2018.02.08)
- "Yeti" (2018.12.28)
- "Ai Kotoba III" (2018.12.29)
- "Shoujo Rei" (2021.09.04)
Discography[]
Gallery[]
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Trivia[]
- She was born in Kagawa.[1]
- The first CD she bought was "My Friends" from ZARD.[1]
- Her family consists of 5 people and she has 2 older siblings.[2]
- She likes reading, especially mystery novels.[citation needed]
- Her name means "skewer", hence the Φ symbols.






