I Want to Reform After Being a Professional Player

My name is Ouyang Kedian, and I'm a playboy, though a more high-class one than your average philanderer. Starting today, I'm going straight. But, just like the lyrics say:

Karma comes around so fast, like a tornado~~~ (The main world features My Teen Romantic Comedy SNAFU, Nisekoi, and Saekano characters popping in, as well as original female characters. If you enjoy romance, come on in and take a look.)