Wait, so the mom said that to be a Swordsman you can't be only strong and fast, you also have to cherish everything around you. And that he can't be a Swordsman because he already cherishes everything around him?
That's gotta be a mis-translation or something cause that makes no sense.
Honestly it just seems like he needs to find an exercise book and memorize it, so he can get stronger and faster effectively, since that's literally all he's lacking. He memorized the techniques already. The magic is just desserts