Karin Zouketsuki

A vampire named Karin Maaka bites people but differs from others of her kind by having an excess of blood. Each month, she is forced to inject blood into her victims, similar to how a snake delivers venom. Her feelings for her attractive classmate Kenta Usui intensify this condition, making her feel as if she might erupt with blood. When her latest victim is both wealthy and good-looking, it leads to comedic disruptions at her school.