Princess Ievna quickly analyzed the situation, and she could immediately understand why Shawn had Prince Reigen transfer the curse first before he could help the two of them get rid of the curse completely.
That was the only way to free Princess Ievna from the curse. That was the only method that would bring the princess return to a normal human again. Only after she was a normal human again, her body would be able to produce blood that could be used to cure the curse on Prince Reigen's body.
It was simple but complicated at the same time, and Shawn smiled before replying, "That's right, Your Highness. That's why I said that we can't directly cure the curse without transferring it first. A red rose won't bleed, will it?"
That was indeed the logic. A flower wouldn't be able to produce blood, but a human could do that. That was why they had to make sure Princess Ievna could return to become a normal human again so that they could get the holy blood from her body.