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Kotaro Maeda, more commonly known by his username Deino, is a 3DCG artist, animator and PV producer known by his disturbing and menacing, yet interesting style. His user name comes from the Greek word δεινός, which means 'terrible,' reflecting very well his art style, which often is labelled as "Nightmare Fuel."

He is the creator of Calcium, and her Hatsune Miku variation Calne Ca. Her character has been officially recognized by Crypton, and she appears in Project DIVA in some of the skins illustrated by Deino.

Deino, along with several other illustrators, is one of the skin designers for the game "-Project DIVA- Arcade".

STATUS:July 2009 → Active
ASSOCIATIONS:Utsu-P, Shuujin-P, Kanimiso-P
OFFICIAL:Website: Self-Portrait
Gallery:Pixiv / Piapro / DeviantArt
Channel: YouTube Nico Nico
PLAYLIST(s):(Youtube) / (Nicovideo Playlist)
WORKS: (Upload date)
  1. "Machine Muzik" (Calne Ca) (Jul.02.2009)
  2. "EXtend" (Miku) (Dec.25.2009)
  3. "Tube Screamer " (Miku, Teto) (Dec.25.2009)
  4. "BitCrushe" (Teto & Miku) (Jun.01.2010)
  5. "Nehanshika" (Gackpo & Miku) (Aug 10, 2010)
  6. DJ TECHNORCH / 無明ヶ丘危険地帯 〜ATARAXIA〜[CM] (Calcium) (Dec.11.2010)
  7. "Do You Need My Voice?!" (Luka) (Apr.30.2011)
  8. "Saikin Osen" (Miku) (Jan.08.2012)
  9. "Saiken Osen (Blue ver.)" (Miku) (Feb.10.2012)
  10. "Parasite Girl no Danmatsuma" (GUMI) (Apr.27.2012)

Songs / Featured Works[]

骸Attack!! (Mukuro Attack!!)

Uploaded 2009.07.03 Featuring Hatsune Miku
Music Utsu-P Main article 骸Attack!! (Mukuro Attack!!)
Lyrics Utsu-P
Video Deino (video)


Uploaded 2010.06.01 Featuring Kasane Teto and Hatsune Miku
Music Dora (music), Kipcin (Teto tuning) Main article BitCrushe
Lyrics Dora
Video Deino

細菌汚染 (Saikin Osen)

Uploaded 2012.02.12 Featuring Hatsune Miku
Music Kanimiso-P Main article 細菌汚染 (Saikin Osen)
Lyrics Kanimiso-P
Video Deino
This song has reached over 1,700,000 views.


Ca Calne concept.jpg
Calne Ca Concept
Ca Calne.jpg
Calne Ca

Mertamor Ca App.png
Metamor Ca Mobile App

Calne Ca non-scale PVC figure
Calne Ca variations figure.jpg
Calne Ca's figure variations
Prisoner novel 3.jpg
Cover art of Shuujin-P's Shuujin to Kami Hikouki "Urakata Anchinomiu" novel illustration by Zain and Deino.
Calne Ca Shuujin ver.jpg
Calne Ca Shuujin to Kami Hikouki ver. figure

Calne Sapporo2011.png
Projection of Calne Ca in Sapporo 2011