Being a vampire wasn't that difficult for Dazai. Look for a prey, hunt it and then dry it out of blood completely or not, it depends whether Dazai wants or doesn't.

And now, sniffing the smell of a disgusting wet dog and seeing a human being in front of him that looked at Dazai like he was seeing a monster was... Interesting.

He let go of the rat he was drinking disgusting blood from and stared at the human ahead of him.

"If I were you, I would have already run away."