HIGH SCHOOL DXD LIGHT NOVEL SC VOL 05
(W) Ichiei Ishibumi (A) Zero Miyama
Ah, summer. The season to bask in the beauty of swimsuits at the pool or the beach. At least, that's what Issei's hoping for when he tags along with Rias on her trip home to the underworld. However, what awaits him isn't half-naked babes, but a hellish training regimen concocted by Azazel, the fallen angel teacher!