Meet Karin Maaka. Though she appears to be a normal high school girl, there is a secret about her life that she MUST keep: she's from a family of vampires.
Karin begs Kenta to keep her nosebleeds a secret. He does so, even cleaning up her mess. Karin is left perplexed as to why her blood increases faster around him.
Due to Karin's blood still having an effect on her, Fumio is constantly positive; however, after numerous failed attempts to get a job, the effects of the blood fade and Fumio goes back to being depressed.
Karin has a nosebleed at school, forcing her and Kenta to hide. Because they disappeared and the puddle of blood, Winner assumes a vampire has sent a servant to take blood from them.
Much to Karin's shock, Ren is targeting Fumio as a potential victim, due to the stress her unhappiness causes; Karin plans to bite her again to repel Ren (whom she fears will do more than just bite Fumio).