"Of course, it's perfectly fine." Van reached forward to put a reassuring hand on Sync's shoulder. "What makes you unique and special is not your appearance, but your abilities. If you're ever worried that you may be too much like the others, then you simply must train harder to ensure that you'll surpass them."

This is likely the best way to it. If Sync fails to separate himself from the other Fon Master rejects, then it at least wouldn't be Van's fault. If the problem ever arises, he could easily place the blame on the boy for not proving himself to be more than trash, and he wouldn't be accused of lying.