Maria
"Do you remember why we have come here?"
Tim
He looks down for a few moments, as if in thought. He's still new to the whole ordeal, and with the lack of prior memories, pretty much everything is a new experience.

*"We.. Are here... To free hearts.. Right?"*

That's all he had been told of the groups goals, so its the only educated guess possible.
Maria
*The man shakes his head.* "Your short-term memory has yet to acclimate to your new form. We are here to train your defenses."

"Your average fighter will use more energy than needed in their attacks. Using less energy than them creates an easy advantage."

"As a Nobody, one of the few things we can feel is physical pain. Your first instinct; that of your opponent as well, will be to avoid pain. But this is a waste of energy."

"Pain warns us when our body has taken damage. If you avoid pain, you avoid damage altogether. While that sounds desirable, it is less efficient than instead simply minimizing damage taken."

"When you avoid damage, you usually spend more energy than is needed to precisely avoid it. Perhaps you push harder forward than necessary against an enemy blade. Perhaps you overexert your legs to roll out of the way of a spell. Either way, you could exert less energy by simply pushing through the pain."

"Do you understand?"
Tim
The younger figure looks up at the mountainous counterpart, watching with little head movement. He listens closely, nodding once the man is done speaking.

"So.. Take damage to not waste any..." A short pause, as if looking for the word. "Energy. Its a.. Strategy. Right?" 

The nobody takes pauses in between every few words, seemingly still struggling to remember his prior vocabulary. It's coming back with every passing day, so given a few weeks, he would likely be able to hold complicated conversation.

For now though, his conversational skills rival that of an elementary schooler. It doesnt effect intelligence, but it could be annoying to some.