What if a Vampire becomes a friend of Luna?

"Is there a snake in the bus?" a man shouted while dancing and looking down. The others panicked too, without caring about the girl who got bitten. "Are you fine?" Nina inquired the girl, whose face became pale by the shock. 

The previously yelling girl, suddenly turned calm, "I won't die, right?"

"How would I know, you should ask the vampire who drank blood from you?" she thought and sighed. "Of course, you won't. I think it's a non-venomous one, as you don't have any symptoms." Nina assured the girl, who has been scolding her for the past few minutes.

Everyone on the bus was bending and checking under the seats. After a few minutes, all stood up straight, catching their backs with pain. "There is no snake here." exhaled an elderly fat woman.

"I know that!" Nina smirked to herself. "I think it escaped when the bus stopped," she remarked as everyone was troubling themselves for the snake, which doesn't exist.