Heart of Hearts / KOTOKO [ ErogesongFull 2001 ]
5:02
I-DOLL / KOTOKO [ ErogesongFull 2002 ]
5:42
[KOTOKO] Heart of Hearts
5:21
注射器2 / KOTOKO TO AKI [ ErogesongFull 2001 ]
5:42
KOTOKO - Heart of Hearts
5:10
PILE・DRIVER / R.I.E [ ErogesongFull 1999 ]
5:26
KOTOKO - Undying Love
5:20
お姫さまだっこ～天使にオシオキ～ / KOTOKO [ ErogesongFull 2001 ]
5:44