Vampire Girl vs. Frankenstein Girl

Monami (Yukie Kawamura) is a pretty new girl at school who quickly develops a furious crush on Mizushima (Takumi Saito), a handsome boy with charisma as impressive as his hair. Mizushima already has a steady girl, Kieko (Eri Otoguro), much to Monami's chagrin, but that doesn't stop her from giving the boy of her dreams a box of special chocolates for Valentine's Day. What Mizushima doesn't know is just how special those candies are -- Monami is a vampire, and the chocolates are filled with blood, which sends him into a psychedelic state and turns him into a fellow creature of the night. Monami asks the newly-undead Mizushima to be her soul mate, but this doesn't sit well with Kieko, and when a fight between the two rivals leaves Kieko dead, that's not enough to stop her. Kieko's father is a scientist doing bizarre experiments in reanimation, and he resurrects his daughter using some spare body parts, turning her into a powerful warrior who goes toe to toe against the vampire who stole her man. (official distributor synopsis)