1999

Mizérable

Vanilla

2000

Mirror

Oasis

~Seki-Ray~

Saikai ~Story~

Secret Garden

2001

Kimi no tame ni dekiru koto

Another World
 

Juunigatsu no Love song

2002

Wa-su-re-na-i-ka-ra

12gatsu no Love song ~Type II~

2003

Kimi ga oikaketa yume

Tsuki no Uta

Last Song

12gatsu no Love Song

2004

Kimi ni ai takute

12gatsu no Love Song (Korean)

2005

Arittake no ai de

Black Stone

Metamorphoze

Todokanai aito shitteita noni osaekirezuni aishitsuzuketa

December Love Song

2006

Redemption

Love Letter