Laz wasn't trying to show off. Actually, when it came to runes, he really couldn't care less. But since these things had been drilled into him thanks to Vivi, he felt a little annoyed with seeing the way these two were using runes in a manner that reduced their power without leading to any actual benefit.
"You..... how....?"
"What do you mean how?" Laz asked back, looking at the young woman as it was her who spoke first.
While she couldn't get anything else out, the grandma on the other hand didn't hesitate.
"I'm truly sorry for whatever transgressions we have made against you," the old woman apologized before stand up and kneeling on the ground. She even went so far as to bend over forward and put her head on the floor as though she were begging for his forgiveness.
