Love x Holic: Miwaku no Otome to Hakudaku Kankei The Animation Episode 1

Demihumans and humans exist in the same world. Amano Daiichi confesses to the princess of the ogres, Suzuka. She rejects him and as he walks around depressed, he bumps into a vampire and snow-woman half, Akane, and kisses her. Their blood intertwines and his transforms into a demihuman elixir. He fucks Akane's brains out and then goes to a convenience store, where he saves a dragon girl who makes him nut again.