Otaku Vampires Love Bite Graphic Novel Volume 04

Kyuta might be Hina's best friend, but her real focus will always be Mao. So why does she feel weird when a cute girl asks Kyuta out? And Kyuta just thinks of Hina as the annoying otaku next door-it's none of his business what she does in her personal life. So why does he want to throttle his buddy when he starts hitting on her?