Karin: Chibi Vampire

Maaka Karin, a vampire from a family of vampires living in Japan, suffers from a rare condition that causes her body to produce excessive amounts of blood. To cope with this anomaly, she regularly donates her excess blood to unwitting victims, leading a relatively normal life like her peers. However, her routine is disrupted when Usui Kenta, a new student, transfers into her class, triggering an unusual surge in her blood production that seems to be linked to his presence. Unbeknownst to Kenta, his arrival has also led him to discover Karin's true nature.