^ I Hope that there are going to be more illustrations then that - like 2 color ones and 4 black and white ones.
Although it's a slim hope... considering the pattern in the previous volumes...
On another ... hopefully less depressing topic ... I wonder what kind of 'development' with Ise, Kuroka and Le Fay are going to have in the next volume, since I believe they are going to be the 'main female heroines' in volume 21.
At the moment the scenario that comes to my mind is Le Fay and Kuroka having a magic and senjutsu enhanced naked breast massage session with Ise to help him recover from the effects of using the DxD mode in volume 20.