High School DxD, Vol. 2 (light novel)

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