1975
Born in Fukuoka
1999
A prize for special element at The 4th Kochi International Print Triennial
2000
The Sponsor Prize at The 5th Sapporo International Print Biennial
The Purchase Prize and The Audience Prize of The 25th All University of Japan for Pritnt Exhibition 
2001
Graduated from Tama Art University
2003
The Sponsor Prize at The 11th Prints 21 Grand Prix
2006
Selected as an good artist in The Japan Print Associatiated Exhibition
2008
Yuya Koiizuka Exhibition at Art Data Bank, Ginza
Exhibited at Asia Top Gallery Hotel Art Fair 08, New Otani Art Museum, Tokyo
2009
Yuya Koiizuka Exhibition: When Japanese Hydrangeas bloom, Art Data Bank, Ginza