well Ceras is generally the main character of this title to me, it doesn't go through Alucards toughts and actions but about her being a vampire now and her struggle, her learning stuff, her becoming the different being, her rejecting the tought she needs to drink blood, Alucard on the other hand is developed, what ever action he makes he tried to teach Ceras that she needs to become stronger, it's why he insisted on her drinking his blood to free herself.
havent read all of the manga cuz by the time it was TLed it took quite a long time so what l'm saying is based on the original anime.