You're right-- Oh, earth can be used to make a sort of trap! Like a net to catch either a runaway bad guy or a animal or something!

[ he's got too many ideas that he's pulled out a notepad he carries for alchemic recipes and starts writing down even more ideas. but hearing someone likes to use his elemental magic with his gun stops him in his tracks. ]

Oh, really? How does that even work...? Was the gun bought here or was it brought from home...?