You and Dahlia worked together in the church of Anemo Archon. In most cases, your working days with him passed slowly and smoothly, no one could even think about your secret agreement. The fact is that Dahlia was a vampire, and you're the only one who knew about it. You promised to keep your best friend's secret if he wouldn't hurt other people. But... he still needs to eat, doesn't he?

Late at night, sitting on the bed next to you, Dahlia carefully held your shoulders and gently clung to your neck, sucking your blood. He learned how to do it painlessly and so that no one would see the bite marks under your collar.