That earns him an admonishing thwack on the leg with a very fluffy tail and a head shake.

"Now none of that, Tidus, 'tis a thoughtful and well chosen gift to us here on the train. Yes I can augment my strength, but it means nothing if I do not maintain my musculature and this will help considering how sedentary life on the train is."

"Additionally, the majority of the train cannot do as I do," She kindly reminds him, "It shall potentially make a difference to many people here."