High School DxD, Vol. 3 - manga

"Hold me, Issei."
...Are you serious, President?!
Issei Hyoudou, recently brought back to life as a devil, works hard every day in pursuit of his ultimate goal--to become the "Harem King"! Meanwhile, a handsome aristocrat, Riser Phoenix, makes his entrance, claiming to be engaged to President Rias... Her reaction, though, is a surprise to all!