The Holy King Wants to Be Killed by the Incompetent Princess

In a world where magic is everything, Princess Electra is branded as incompetent and unable to use any magic. But one day, the enemy country's most powerful magician, the Holy King, approaches her, claiming that she is "the only person who can kill him"...!? *"If you could kill me, I couldn't be happier."* (Source: Kadokawa, translated)