Its fine, he's already made sure the ceiling is fire proof. It was mostly for Saya reasons, but this also works.

And he honestly expects the invasion, but at least he's given warning so he has ever right to complain.

"You might actually manage with some of the peppers they have here. Usually to manage anything like the Inferno, I needed to charge the peppers with magic because anything grown doesn't grow nearly fast enough," Red Son said as he prepared the tea. It was helping. Keeping his hands busy made it a lot easier to process all the things MK had gone on about.