HIGH SCHOOL DXD LIGHT NOVEL SC VOL 02 #1

I, Issei, have been getting used to living as a demon. Until Rias started acting strange, that is. Turns out she's engaged to some pretty-boy demon named Riser Phenex. No way am I letting some other guy horn in on my territory. I'm the one who's going to have a harem full of super-cute girls!