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

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.