KOH+
Koi no maryoku
Release date: May 29, 2013
Saiai
Release date: October 01, 2008
01 Saiai
02 Saiai (instrumental)
KISS shite
Release date: November 21, 2007
01 KISS shite
02 KISS shite (instrumental)
see also Fukuyama Masaharu & Shibasaki Kou