"Right, I understand!" Garrot quirks an eyebrow at all that, because he does not entirely understand. They're killing monsters to save the world what else does Luka have on his schedule? But Garrot has hard-scheduled video calls with his family, so. Maybe it's a Princess thing, maybe he doesn't want to broadcast his lack of combat training to everyone.

"I'm actually already getting some good ideas for you, Luka!" It sounds like he's taking a more tailored approach than the situation than the training camp. "I might need a day or so to get stuff together but just... let me know when you're ready?" A beat. "Or I can tell Haizea, and then there's two of us with openings in our schedules!"

What the Princess wants, the Princess gets, so Garrot's being as accommodating as possible. Plus it's not like he wants Luka to feel defenseless against monsters that especially want to kill him.