Eiji Mikage books in order
7 books in the catalogue, about 26 hours of reading in all; the shortest takes 3 hours and the longest 4 hours.
1 series in the catalogue.
The Empty Box and Zeroth Maria
7 books 1 The Empty Box and Zeroth Maria, Volume 1 4.0 h 2 The Empty Box and Zeroth Maria, Volume 2 3.7 h 3 
The Empty Box and Zeroth Maria, Volume 3 3.6 h 4 
The Empty Box and Zeroth Maria, Volume 4 3.5 h 5 
The Empty Box and Zeroth Maria, Volume 5 3.5 h 6 
The Empty Box and Zeroth Maria, Volume 6 3.5 h 7 
The Empty Box and Zeroth Maria, Volume 7 4.3 h
The Empty Box and Zeroth Maria, Volume 3 3.6 h 4 The Empty Box and Zeroth Maria, Volume 4 3.5 h 5 The Empty Box and Zeroth Maria, Volume 5 3.5 h 6 The Empty Box and Zeroth Maria, Volume 6 3.5 h 7 The Empty Box and Zeroth Maria, Volume 7 4.3 h