Koichi Kishi was born in 1940.
Koichi Hagiuda was born in 1963.
Koichi Fukuda was born in 1975.
Koichi Kawana was born in 1930.
Koichi Kidera was born on 1972-04-04.
Utau is 14 years old! ;P
Ikuto is 17 and Utau is 14.
Koichi Domoto is 38 years old (birthdate: January 1, 1979).
Koichi Sugiyama is 80 years old (birthdate: April 11, 1931).
Koichi Tanaka is 52 years old (birthdate: August 3, 1959).
Koichi Wakata is 48 years old (birthdate: August 1, 1963).
little ikuto was 7 and little utau was 4
Ritsu is not a VOCALOID. He is a 6 year old from a program called UTAU.
UTAU is a free program and you can find it by googeling "UTAU download" that's what i did anyway...
Utau Hoshina is voiced by Nana Mizuki .
Koichi Haraguchi died in 2009.
Koichi Ishii was born in 1964.