| Title | Year |
| Gravitation, Volume 1 | 2003 |
| Gravitation, Volume 2 | 2003 |
| Gravitation, Volume 3 | 2003 |
| Gravitation, Volume 4 | 2004 |
| Gravitation, Volume 5 | 2004 |
| Gravitation, Volume 6 | 2004 |
| Gravitation, Volume 7 | 2004 |
| Gravitation, Volume 8 | 2004 |
| Gravitation, Volume 9 | 2004 |
| Gamerz Heaven, Volume 1 | 2004 |
| Gravitation, Volume 10 | 2005 |
| Gravitation, Volume 11 | 2005 |
| Gravitation, Volume 12 | 2005 |
| Kanpai! Volume 1 | 2005 |
| Gamerz Heaven, Volume 2 | 2005 |
| Kimi No Unaji Ni Kanpai! Volume 2 | 2005 |
| Gravitation: The Novel | 2006 |
| Gravitation: Voice of Temptation | 2006 |
| Gravitation EX, Volume 1 | 2007 |