a vampire in love with a mortal but gets poisoned by a gas leaked by a jealous man who wants the girl and the vampire ends up k.ill.ing her and realizing how much of a mistake that was because he was under the spell of the gas. Then, as time goes on, he tells his kids about her. and the end.
1. They help the setting become more realistic. 2. They could even help the main character on stage feel less anxious, since they're not the only one up there.