Mahiro seems to admire Ichijou-san from afar. She's the most popular student in the class and belongs to a very prestigious family. Despite all this, Ichijou-san treats everybody nicely and is equally kind to everyone. But she harbors a secret that Mahiro unexpectedly discovered— she's a vampire! She claims she's not interested in human blood, though there appear to be moments when she's barely able to conceal her innermost desires...
A bloodsucking, heart-throbbing love-comedy about a young lady vampire!

Based on the idol group, 22/7 (nanabun no nijyuuni).