Singles
01 Ashita
* Released: 07.17.1998
* 8cm disk
* Theme song of Shinsei Toilet no Hanako-san
* Ending song of Shimbashi Music Hall
02 Naki-mushi
* Released: 03.03.1999
* Ending song of an MBS-TV, Okaeri Wide
03 Hanabi
* Released: 08.04.1999
* Ending song of Geki Maji!! ~Teen no Honne~
04 Kabutomushi
* Released: 11.17.1999
* Ending song (December, 1999) of a TBS's programme, CDTV
* Ending song of Jobireba!?
05 Sakura no toki
* Released: 02.17.2000
* Promotional song of Calpis
06 Boyfriend
* Released: 09.20.2000
07 Hatsukoi
* Released: 02.21.2001
08 Rosie
* Released: 05.30.2001
09 Oyasuminasai
* Released: 11.21.2001
* Theme song of Sayonara, Shotsu Sensei
10 Anata to Akushu
* Released: 04.24.2002
11 Kondo made niwa
* Released: 08.14.2002
12 Chocho-musubi
* Released: 04.23.2003
13 Andromeda
* Released: 08.06.2003
* Promotional song of Glico's Glico café au lait
* Theme song of Massugu ni Iko
14 Eriashi
* Released: 11.06.2003
15 Kaban
* Released: 04.28.2004
16 Hanakaze
* Released: 09.01.2004
* Promotional song of THE LIVE 2004
17 Mikuni-eki
* Released: 02.16.2005
18 Kirakira
* Released: 08.03.2005
* Theme song of Gambatte Ikimashoi dorama
19 Star
* Released: 11.30.2005
* Theme song of Arashi no Yoru Ni
20 Kumo wa Shiro Ringo wa Aka
* Released: 07.12.2006
21 Shiawase
* Released: 05.30.2007
22 Hoshi no Nai Sekai/Yokogao
* Released: 08.22.2007
* Hoshi no Nai Sekai - image song of Final Fantasy Crystal Chronicles: Ring of Fates
* Yokogao - theme song of Hotaru no Hikari dorama
Albums
01 Chiisana Marui Kojitsu
* Released: 04.21.1999
* Orange na Mangetsuis is the opening song of Shuukata Chikyuu TV
* Shiseikatsu is the ending song of a Love Chat
02 Sakura no Ki no Shita
* Released: 03.01.2000
* Promotional song of DoCoMo502i-mode
03 Natsufuku
* Released: 06.20.2001
04 Aki, Soba ni Iru yo
* Released: 09.04.2002
05 Akatsuki no Love Letter
* Released: 11.27.2003
06 Yume no naka no massugu na michi
* Released: 03.02.2005
07 Kanojo
* Released: 08.23.2006
08 Himitsu
* Released: 04.02.2008