The title of strongest of all Noah's children goes to Noelle. Although Grace was originally the strongest, she rarely chose to increase her strength.
Fighting battles was not in Grace's nature. On the other hand, Grace's greatness lies in her ability to perform her job effectively, utilizing her brain.
As the daughter of Alicia and Noah, Grace's intelligence about the situation is extraordinary. Most of Ash's previous plans came from Grace.
Ash initially rejected Grace's plan. Deep inside Ash, he was afraid that Noah's children would lose their lives.
As a friend and uncle to his best friend's children, Ash desires to save them. After interacting with them several times, Ash realized that the potential of Noah's children was unreasonable.
To imagine how his current talent compares to the talents of Noah's children, assuming that it was not lower than his own. Now Ash's goal is to wait for Noah to return from the Outer Realm.
