Hasegawa, Kobato

羽瀬川小鳩

Kodaka's younger sister; she is a middle school student, yet she joins the club anyway. She is very close to her brother, whom she calls "An-Chan", and acts jealous and clingy whenever she feels he is not giving her the attention she deserves, to the point where it is clear that she has a brother complex. She views Maria as a rival for Kodaka's brotherly affection, so she often gets into fights with her.
She has had a penchant for darkness, vampires, and the macabre ever since she started watching an anime called Full Metal Necromancer. As a result, she often speaks in an affected manner and claims to be known as "Reisys VI Felicity Sumeragi", an ancient vampire who has lived for ten thousand years, but this façade quickly breaks down when she gets emotionally worked up and she speaks in a strong Kyuushuu accent. Indeed, her behavior does not for the most part differ from that of a regular girl (procrastinating with her homework, staying inside when it is hot, etc.), which Kodaka points out, causing her to be embarrassed and slightly lose character.