| Love Forever | 1999-04-15 | Composer | Koguchi Mayumi | |
| Hikari o... | 2000-03-10 | Composer | Seki Mayumi | BGM |
| Aries | 2000-04-28 | Composer | Seki Mayumi | ED "Ashita e no Okurimono" Arrangement |
| Natural2 -DUO- | 2000-05-26 | Vocals | Koguchi Mayumi | DVD OP "Furitsumoru Omoi ~DreamSnow~" and ED "Motto Anata ni Tsutaetai" |
| Horohoro | 2000-09-14 | Composer | Koguchi Mayumi | |
| Dousoukai Again | 2001-01-26 | Vocals | Koguchi Mayumi | OP "just in love" and ED "Tomodachi" |
| Infantaria | 2001-01-26 | Composer | Koguchi Mayumi | OP "Infantaria", ED "Sow" arrangement |
| Univ ~Koi Hajimaru Yo~ | 2001-05-25 | Vocals | Koguchi Mayumi | OP "My Wish ~Kono Saka no Mukou ni~", Koi Hen ED "Kawaranai Basho", Ai Hen ED "Hidamari no Naka de" |
| Yukiusagi | 2001-06-15 | Composer | Koguchi Mayumi | |
| Dousoukai Refrain | 2001-08-24 | Vocals | Koguchi Mayumi | OP "just in love -refrain mix-" and ED "Tomodachi -refrain mix" |
| Beside ~Shiawase wa Katawara ni~ | 2001-10-26 | Vocals | Mayumi | OP1 "Shiroi Kumo wo Miagete", OP2 "Shiawase wa Katawara ni", ED "Onaji Sora no Shita de" |
| Virgin Trigger | 2002-05-24 | Composer | Koguchi Mayumi | |
| Sweet Season | 2002-11-29 | Composer | Koguchi Mayumi | |
| Komorebi no Namikimichi | 2003-01-24 | Vocals | Koguchi Mayumi | ED "Warming ~Kokoro no Uchi no Kaze~" |
| RUN | 2003-03-20 | Composer | Koguchi Mayumi | OP |
| Usaneko ~Mimikko Meido no Ongaeshi~ | 2003-06-27 | Composer | Koguchi Mayumi | OP |
| to... | 2003-10-31 | Composer | Koguchi Mayumi | |
| Imouto Watashi, Donna Koto Datte... | 2003-11-28 | Composer | Koguchi Mayumi | |
| Ensemble ~Maioriru Hane no Ensemble~ | 2004-01-30 | Vocals | Mayumi | ED "Eien e no Tobira" |
| Nyuukan Nurse! | 2004-01-30 | Composer | Mayumi | BGM |
| Sora-iro no Organ | 2004-03-26 | Vocals | Koguchi Mayumi | Insert song "Sekai wa Fushigi ni Afureteru" |
| Hatenaki Sora | 2004-12-17 | Composer | Koguchi Mayumi | ED lyrics |
| Answer Dead | 2005-01-14 | Composer | Koguchi Mayumi | OP |
| Answer Dead | 2005-01-14 | Vocals | Koguchi Mayumi | OP "Victim Of Your Crime" |
| Megami Taisen | 2007-06-08 | Composer | Koguchi Mayumi | BGM |
| Kango Sentai Nurse Ranger | 2008-01-18 | Composer | Koguchi Mayumi | BGM |
| Shouryuu Senki Tenmu | 2008-08-09 | Composer | Koguchi Mayumi | BGM |