A love between a werewolf and a vampire

Vor tausend Jahren vergaßen alle Menschen die Monster. Jeder glaubte, sie existierten nicht, sie seien reine Fantasie, menschliche Einbildung – nichts weiter. Niemand kannte die Wahrheit. – In einer Welt voller Dunkelheit, in der die Sonne niemals scheint, leben allerlei Monster, von Werwölfen bis zu Dämonen. Sie alle leben in Rudeln und Gebieten fernab der Menschen, für die Menschen selbst Monster waren. – Zu den mächtigsten Monstern zählen Hexen, Vampire und Werwölfe. Vampire und Werwölfe sind seit Milliarden von Jahren Rivalen, weshalb ihre Gebiete weit voneinander entfernt liegen. – Unter ihnen sind Aiden, der Prinz der Vampire, und James, der Prinz der Wölfe. Sie hassen einander und sind Feinde, wie ihre Familien und Clans. Es ist ihnen strengstens verboten, einander nahezukommen.

Werewolves: They become animals when the full moon comes, they behave like animals, they look like humans but the difference is that they have tails and animal ears and sharp teeth, they growl, they eat human flesh, they are very territorial, always faithful to their pack, they love the moon and when they want they are people.

Vampires: They turn into bats, they are immortal but can be killed by: stakes, garlic, sunlight and clumps, they cannot enter a place without being invited first, they are fast and very agile, they can see from very far away and levitate, in addition to having instincts that never fail them, they can heal and kill at the same time, they drink blood to live and they love to be alone, they can turn into any animal, they can walk on walls and ceilings with ease and without using their hands
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James and Aiden have a secret relationship from everyone because they don't want anyone to know because if not, they would both have problems and a strange war. They meet in a secret and remote place to talk and be together. They both love each other but their love is strictly forbidden.