DECO*27 (デコ・ニーナ Deko Niina, born December 16, 1986) is a Fukuoka-born VOCALOID song producer and utaite. His first work got over 100,000 view counts quite suddenly, and his current popularity is stable. His style has been described as a fusion of rock and pop. He had a sub-name called DEKOUS*UK when cooperating with kous and sasakure.UK in ef's album (恋色クローバーピース).
Lately, DECO*27 has been collaborating with kous on a fair number of original songs. While kous provides the arranges, DECO*27 is responsible for the music and lyrics. DECO*27 is also known to frequently collaborate with sasakure.UK.
He picked "DECO" (lit. "forehead") because he has a large one and the numbers "2" and "7," because they are his favorite numbers. A glance at his keyboard inspired the asterisk. The numbers "27" are read "nii-na," as per the Japanese pronunciation.
DECO*27 had been stretching his limits outside of VOCALOID. He composed and arranged a song called "FEVER" for the Hello! Project group Buono!, which was the first track in their mini-album SHERBET.