Master of Mosquiton '99

One fateful day, Inaho -- a model catholic high school student -- meets a vampire named Mosquiton and his two sidekicks: Honou and Yuuki. Joined by a gorgeous wolflady and a kindhearted brute, they set out to search for the mystical items called "O-parts". These mysterious treasures, difficult to obtain, are rumored to give incomprehensible power to the one who manages to obtain and activate them with an O-part key.