The Day I was Born Into a Ducal House, I was Branded as a Disqualified Heir, but I'm Still Living Well to This Day!

Etois has been reincarnated into a duke's family in another world, but she was born with little magic power. Because of this, she has been branded with a "Disqualified" writing on her forehead! One day, five children are gathered from a branch family. They are to serve as Etois' bodyguards until she turns fifteen, and the best of them will become the heir to the duke's family. But Etois has an amazing ability that she had forgotten about, but which was granted to her by the gods...?