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 KAITO is a Vocaloid created by Crypton Future Media. He utilizes the older Vocaloid engine developed by YAMAHA, the predecessor of Vocaloid2. The voice was supplied by a Japanese male singer Naoto FugaThe illustration was done by Takashi Kawasaki. The product's name was invited from the public, and "KAITO" was selected from among applicants, which was the idea of Shu-tP.

Source from Wikipeida