7 books in series
Area D - Inou Ryouiki
Area D - Inou Ryouiki is a 7-book series with 7 primary works first released in 2012 with contributions by Kyōichi Nanatsuki and Kyouichi Nanatsuki.
| #1 |  Area D 異能領域, Vol. 1
| 4 | 1 read | ||
| #2 |  Area D 異能領域, Vol. 2
| 3 | 1 read | ||
| #3 |  Area D 異能領域, Vol. 3
| 3 | 1 read | ||
| #4 |  Area D 異能領域, Vol. 4
| 3 | 1 read | ||
| #5 |  Area D 異能領域, Vol. 5
| 3 | 1 read | ||
| #6 |  Area D 異能領域, Vol. 6
| 3 | 1 read | ||
| #7 |  Area D 異能領域, Vol. 7
| 3 | 1 read |