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Music / sasakure.UK

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sasakure.UK is a Japanese musician best known for the song "*Hello, Planet." featuring Hatsune Miku. He is also the producer of the band UKRampage.

From the 2000s to the 2010s, he created three different series: the Doomsday series, the Humans and Robots series, and the Ayakashi series. Hitoma Iruma adapted "The (Week)end is Coming!" and "Our 16bit Wars", the chronologically first two songs of the Doomsday series, into novels in 2015 and 2016.

In addition to his Vocaloid work, he has also composed several original pieces for games in the BEMANI franchise, as well as "SINGI", the theme song for The Caligula Effect 2.

Here are his Facebook, Niconico, Twitter, and YouTube accounts, as well as his official website.


  • Wandering Visitor (December 31, 2006)
  • Kaleido*MIXture (August 14, 2008): The first album by sasakure.UK to include Vocaloid songs. It is also a collaborative album with YOmindAmp and Latteneko.
  • Mistletoe -Viscumalbum- (December 30, 2008)
  • La La La Doomsday. (August 15, 2009): The first album of the Doomsday series. It is also the first album by sasakure.UK to include Gumi and Megurine Luka.


  • Do Vocaloids Dream of Doomsday Bird? (March 3, 2010): The first album by sasakure.UK to be published by U/M/A/A. It adds "*Sayonara, World End." as the fifth and last song of the Doomsday series. It also includes remixes of "Campanella" and "*Hello, Planet." respectively by DECO*27 and Treow.
  • *Hello, World's End Cine Camera. (May 5, 2010), a DVD containing the music videos of eight songs by sasakure.UK. The music video of "Marie's World" is only available in this DVD.
  • Prototype Nana Kujaku (August 15, 2010), which includes sasakure.UK's remixes of Yuuyu's "Clover♣Club" and Dixie Flatline's "Just Be Friends".
  • The Trash-Heap Princess and Apostrophe (June 12, 2011): The first album to include the Humans and Robots series. It doubles as a picture book.
  • Koiiro Clover Piece (September 4, 2011): A collaborative album of three songs with DECO*27 and Kous.
  • The Fantastic Reality of Aesop (April 11, 2012): The first album by sasakure.UK to include human singers and Perio. It adds "Non-World Harmonize", "Machine-Memory in Aether", and "Steel-Reconstruction Fiction" to the Humans and Robots series. It is the first album to include UKRampage.
  • MetroJackz (August 11, 2012): The first album by sasakure.UK to include Lasah and Tsuna. "Utopia of OZ" is a collaboration work with OSTER project.
  • UK Sekai Reconstruction (October 17, 2012): The first album to feature UKRampage. It includes covers of "Kagerou Daze" from the Kagerou Project, DECO*27's "Two Breaths Walking", Kurousa-P's "Thousand Cherry Blossoms", 40mP's "Urbandonment", Mitchie M's "Freely Tomorrow", Music/Wowaka's "Love & Lovers_", Powapowa-P's "Strobe Last", and sasakure.UK's "*Hello, Planet."
  • Yukiiro Flavor Piece (January 20, 2013): A collaborative album with DECO*27, Ef, Cie, Kous, and Yuxuki Waga.
  • The Fantastic Diagram of Futuristic Playdreams (May 29, 2013)
  • [i:d] (August 12, 2013)
  • Makamaka Monomonosy (December 17, 2014): The first album of the Ayakashi series. It is the first album by sasakure.UK to include Kasane Teto and IA.
  • LostPirika (August 16, 2015)
  • Fukashigi Monoyukasy (December 2, 2015): The sequel to Makamaka Monomonosy. It includes the long version of "Brionac of Steel-Flash" as a bonus song.
  • Zetsumetsu-Commonsense (August 14, 2016)
  • CLOCKWORK ALPHA (August 14, 2016)
  • GÜM (December 29, 2017)
  • UNIQTRAP (December 29, 2017), which includes remixes of the original soundtrack of Undertale.
  • Arukatachi (December 30, 2018), the second album by UKRampage.
  • Ergosum (December 31, 2019)

sasakure.UK provides examples of:

  • All There in the Script:
    • The description of "Tig-Hug" on Nico Nico Douga reveals that Ichijiku is the name of the girl on the covers of Makamaka Monomonosy and Fukashigi Monoyukasy.
    • The description of "Nekosogi Matter Bop" on Nico Nico Douga reveals that Sato is the name of the Cat Girl in the Ayakashi series.
    • The description of Fukashigi Monoyukasy on Amazon reveals that Kei is the name of the main character of "A(ma)YAKASHI Diary" and "A(ma)YAKASHI Monoganasy".
  • Call-Back:
    • His collaboration with DECO*27 for Christmas, "Snow Song Show", ends with the same notes as the end of "*Hello, Planet."
    • sasakure.UK's song for Magical Mirai 2022, "Future Eve", makes several references to his previous works, including "*Hello, Planet.", "TONDEMO-WONDERZ" and "Fragile Phoenix".
  • Cat Girl: Sato, the main character of "Nekosogi Matter Bop" and "Ghost Light", looks like a teenage girl with a cat's ears and two tails.
  • Dead Person Impersonation: "Ghost Light" reveals that Sato is impersonating her dead friend.
  • Face–Heel Turn: In the music video for "TONDEMO-WONDERZ", the girl accidentally breaks her friend's necklace, straining their relationship. When he's next seen, he has Dull Eyes of Unhappiness, has lackeys that start vandalizing the city, and appears to set up a massive bomb. When the girl goes to stop him, the "bomb" goes off to reveal that it's a box of confetti, and the "vandalism" turns out to be a big apology message to her. Cue Tears of Joy, and the two of them promptly reunite.
  • Half-Human Hybrid: "Myriad of Ages Lullaby" and "A Millennium and the Spiral, For Things that Fall" feature Nagare, the child of a human woman and a male ayakashi.
  • Lyrical Dissonance:
    • "Weekend (Worldend) is Coming!" is an adorable pop song about how war shatters a young schoolgirl's heart by taking her crush away.
    • "The WANDERLAST" is a serene chiptune about an android who is about to meet her end.
    • "*Hello, Planet." begins with a robot waking up after the apocalypse and wanders through a deserted wasteland to find her master. The music video ends with a happy closing melody in a scene where the robot dies in front of her master's grave.
  • Sailor Fuku: The illustrations for "A Millennium and the Spiral, For Things that Fall" and "Ki Ki Kai Kai" depict Nagare as a young boy in a gakuran.
  • Shout-Out:
    • "For Campanella" is based on Night on the Galactic Railroad.
    • "Tiger Rampage" is based on The Moon Over the Mountain by Atsushi Nakajima.
    • "Crybaby Pippo" quotes "Be not defeated by the rain, Nor let the wind prove your better", the famous line from Be not Defeated by the Rain by Kenji Miyazawa.
    • "A Soliloquy of The Boy who Cried Wolf" is based on The Boy Who Cried Wolf, one of Aesop's Fables.
    • "Little Cry of The Abyss" is based on The Little Mermaid. The music video includes the original Danish text of the fairy tale.
    • "to Asteroid B-612" is told from the perspective of the titular character of The Little Prince.
  • Soulful Plant Story: "*Hello, Planet." follows Miku's journey through a post-apocalyptic world as she keeps a flower pot, the only keepsake she has of a lost companion, safe. The music video ends with Miku dying after her arduous journey, but the plant successfully sprouts.
  • Stepford Smiler: "Little Cry of The Abyss" is about a mermaid in unrequited love with a human male. The lyrics include the line "Even if I knew it's all in vain / would I force myself to smile and be hurt? / I pretended to be tough and happy when I couldn't tell of my love".
  • Word Salad Lyrics: "TONDEMO-WONDERZ" is through and through a denpa song, with lyrics that make little to no sense together but sound good.
  • Youkai: The Ayakashi series focuses on youkai in modern Japan, known here as ayakashi. Kei, the main character of "A(ma)YAKASHI Diary" and "A(ma)YAKASHI Monoganasy", has been writing a diary where he blames imaginary ayakashi for everything bad that happens to him.