[Katsuki's reactions are hilarious and of course Max is going to have fun riling him up moving forward. He watches the blond closely as the parasol floats and the ay he reacts. He grins a little wider.]

I know a very powerful mage who would disagree with you. An umbrella can be pretty badass. Just needs more spikes.

[He'll snap. Spikes appear on the points at the end of the thin support rods on the umbrella. Then the end of the handle sprouts a skull at the end.]

Well, it is an older sibling's responsibility to take care of the younger one. Our dad wouldn't have it if I just left you out in the sun to bake.