Karin is a vampire with a twist—she experiences intense bleeding from her nose once a month—so instead of stealing blood from humans, she gives her blood to them and if done properly, the benefits are positive to both.

Kenta sees Karin at work and school, each day serving as a reminder that something about the girl with the oft-bloody nose just isn't right! He's suspicious...and he's not exactly subtle about it. Fearing that he might discover her secret, Karin decides to kill this potential problem—with kindness! She goes out of her way to do all kinds of nice things for him. But when Kenta catches her "feeding" yet again, the gig may be up. So what's a vampire girl to do? Why, take the boy home to meet her parents, of course!

Karin is a vampire with a twist—she experiences intense bleeding from her nose once a month—so instead of stealing blood from humans, she gives her blood to them and if done properly, the benefits are positive to both.

Karin's crush on Kenta has taken a turn for the worse. She seems to be falling deeper into the friend zone. Her monthly woes are putting a damper on her life. Karin must come to terms with the fact her desire to kiss Kenta may turn into a bite.

Karin is a vampire with a twist—she experiences intense bleeding from her nose once a month—so instead of stealing blood from humans, she gives her blood to them and if done properly, the benefits are positive to both.

Karin's crush of Kenta may be finally be revealed. But things take a turn when Kenta's mom seeks the whereabouts of Kenta and Karin with the assistance of a detective. A case of mistaken identity causes Karin’s most explosive nose bleed ever! Karin's crush continues but now it is a forbidden one.

Karin is a vampire with a twist—she experiences intense bleeding from her nose once a month—so instead of stealing blood from humans, she gives her blood to them and if done properly, the benefits are positive to both.

Karin is a vampire with a twist—she experiences intense bleeding from her nose once a month—so instead of stealing blood from humans, she gives her blood to them and if done properly, the benefits are positive to both.

Karin is a vampire with a twist—she experiences intense bleeding from her nose once a month—so instead of stealing blood from humans, she gives her blood to them and if done properly, the benefits are positive to both.

A cute little girl who happens to be a vampire, Karin has blood to spare, so rather than stealing blood from humans, she gives her blood to them, an experience that, if done right, benefits the "victim" as much as the vampire, but Karin never seems to do things right.