Responses

No. Heinrich has the right to the throne because he threatened the Emperor by using his mistress. The Emperor's beloved mistress was part of the nobility but they were full of debts, so Heinrich used his power and held them hostage against the Emperor. On the other hand, Heinrich's clan is somewhat related to the Emperor but they're not really considered as direct descendants to the royal blood. That's why he had to resort to these means to get a right to the throne.
Now I want this to be enemies to lovers-