YMMV / cosMo

• Awesome Music: "The Disappearance of Hatsune Miku", of course. As sad as the song is, its upbeat composition and blazing fast lyrics grabbed the attention of Miku fans very quickly.
  • To follow up, "The Intense Voice of Hatsune Miku" is regarded just as well as its predecessor for it's uplifting tone befitting it's status as Miku's Golden Ending and well-written speech about VOCALOID as a concept.
• Ensemble Dark Horse:
  • Rho and Lambda enjoyed a spike in popularity after the release of "ANTI THE ∞HOLIC" due to their gothic lolita designs and ambiguously-moral nature at first glance. Needless to say, quite a few people were excited to see their backstory revealed over the course of the Star Girl series of songs.
  • The version of Rin used in cosMo's rock remix of "Meltdown" by iroha(sasaki) (and it's Project Diva module version) is still the one most associated with the song over the one used in the original PV.
• Heartwarming Moments:
  • "The Intense Voice of Hatsune Miku", in great contrast to "Disappearance", shows Miku being able to come to terms with her fate of eventually being forgotten and deciding that as long as one person finds joy in hearing her voice, her existence will never truly fade. It's emphasized further by "Hatsune Creation Myth", written 10 years later, where the sheer amount of people helped by Vocaloids has ensured that the "disappearance" she was terrified of in the original series will not be happening for a very, very long time.
    "A singing voice that will last for eternity, an eternity of things that absolutely can't be forgotten."
  • Rho and Dr. Realist finally reuniting with Lambda in "AI Girl and the Deep Heart Sea", who had previously been imprisoned as Stella.
• Memetic Mutation: Top 10 rappers Eminem was too afraid to diss. ^explaination  Miku's very fast singing in "Disappearance" and "Intense Voice" is often jokingly compared to Eminem.
• Nightmare Fuel:
  • "HYPER∞LATiON" shows Miku being horrifically brought back after her death in "Disappearance", and seemingly killing her producer in revenge for deleting her.
  • "Demise of Hatsune Miku" is a mix of this and Tear Jerker. The album version is particularly nightmarish, with the last few seconds of the song sounding like Miku is screaming in despair.
  • "Sadistic Music Factory" depicts Miku as a tyrannical being forcing her producers to make music for her nonstop forever.
• Quirky Work: A good chunk of his earliest works (and some of his modern ones) were very bizarre, to say the least. The Rampage series, "Magical Girl Radical Paint" and the Magical Kitty Len Len duology are the biggest examples.
• Signature Song:
  • Amongst VOCALOID fans, The Disappearance of Hatsune Miku.
  • Amongst SOUND VOLTEX fans, For UltraPlayers.
• Tear Jerker:
  • "The Disappearance of Hatsune Miku" is one of the most infamously sad songs featuring Miku for a reason.
  • "Demise of Hatsune Miku" is just as sad as "Disappearance", with Miku's producer growing tired of her and abandoning her in a forest. One of the album artworks even depicts a chibi Miku lying on top of a pile of junk just to drive the point home.
  • Lucy's death at the end of "Capsule".
  • Similarly, Adventurous Girl's succumbing to her illness despite arguably returning to reality safely in her song.
    "Let's play again tomorrow, people of the miniature garden game."
• That One Boss: Because of how fast and busy his songs are, you can expect any song of his that's in a Rhythm Game to have boss charts that will murder your fingers:
  • In Hatsune Miku: Project DIVA, "Intense Voice" is universally recognized as the hardest song in the franchise, bar none. Its re-release in F 2nd doesn't even remotely compare to the burning hell that was the original.
  • In Sound Voltex, he's notorious for being the artist behind several boss songs, including For UltraPlayers, one of the first two charts to break the then-current difficulty level cap of 15.
  • He returns to his title as this in Project SEKAI, with his two most notable songs ("Disappearance of Hatsune Miku" and "Intense Voice of Hatsune Miku") being at the top of the difficulty chart at level 28-29. Then he managed to dethrone those with his commissioned song for the game, "Machinegun Poem Doll", bringing the difficulty cap to 34. And since cosMo can't seem to get enough, his entry to Proseka ULTIMATE, "Yaminabe!!!", joins the ranks thanks to it's new mechanic of adjusting note speed to the song's BPM rate on harder difficulties (take note that "Yaminabe"'s BPM reaches a blistering 300).
• Wheelchair Woobie: Adventurous Girl doesn't have a wheelchair, but she's unable to walk in her normal form.

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