Because I like you(2008)

Datte Sukinanndamon

The new school Riria has just transferred to has a lot of people with suspicious abilities.There are vampires with fangs and the snow devil son of the snow fairy. And then it turns out that Riria is a demon who sucks the life out of the people by kissing them!?

(Source: Awakened Memories)

Includes 2 side stories and the one-shot Unmei Datte Ii Ja Nai (It's Fate, That's Good Right---!).