| My Collection | | volume |
| (The) Art of Loving (manga) | | Graphic novel 1 |
| Black Knight | | Graphic novel 1 |
| Black Knight | | Graphic novel 2 |
| Black Knight | | Graphic novel 3 |
| Gravitation (manga) | | Graphic novel 1 |
| Gravitation (manga) | | Graphic novel 2 |
| Gravitation (manga) | | Graphic novel 3 |
| Gravitation (manga) | | Graphic novel 4 |
| Gravitation (manga) | | Graphic novel 5 |
| Gravitation (manga) | | Graphic novel 6 |
| Gravitation (manga) | | Graphic novel 7 |
| Gravitation (manga) | | Graphic novel 8 |
| Gravitation (manga) | | Graphic novel 9 |
| Gravitation | | Graphic novel 10 |
| Gravitation | | Graphic novel 11 |
| Gravitation | | Graphic novel 12 |
| Gravitation - The Novel | | Novel |
| Gravitation - Voice of Temptation | | Novel |
| Gravitation EX (manga) | | Graphic novel 1 |
| Only the Ring Finger Knows | | Graphic novel |
| Only the Ring Finger Knows - The Lonely Ring Finger | | Novel 1 |
| Only the Ring Finger Knows - The Left Hand Dreams of Him | | Novel 2 |
| Only the Ring Finger Knows - The Ring Finger Falls Silent | | Novel 3 |
| Othello (manga by S. Ikezawa) | | Graphic novel Toui Hasumi (Author) |
| Our Kingdom | | Graphic novel 1 |
| Our Kingdom | | Graphic novel 2 |
| Our Kingdom | | Graphic novel 3 |
| Our Kingdom | | Graphic novel 4 |
| Our Kingdom | | Graphic novel 5 |
