In 1431, Dracula made a pact with an evil deity who granted him his dark powers. He then used his newly gained powers to conquer the nations of Europe. His son Alucard did not support these actions and abandoned him.
He would eventually encounter Sonia Belmont and was impressed, as she was the first human who managed to challenge him directly. First he tried to get her to his side but to no avail. The Count then engaged with her in a battle to the death but was eventually defeated. This was not the end for him, however, as he vowed to return as long as there would be evil in the world.
↑IGA: 漆黒たる前奏曲は、ドラキュラの世界観をまったく無視して作られた作品だったため、私がプロデューサになった時に、正しい歴史からはずしました。あくまで同じ世界観をつかった別の世界の物語と考えてくだされば良いかと存じます。 Translation: Because Castlevania Legends was a work that completely ignored Castlevania’s look, when I became producer, I removed it from the proper history. I think it would be best to think of it as a story from a different world that used the same look.