Coming from a world with fiends and knowing this guy had giant whales flying around (and also another undead problem, from the sounds of it), Tidus wasn't going to judge the guy's life. Any protection was better than none.

He throws up his arms behind his head, a thoughtful hum following a tip of his head meant to be a nod.

"Back in my world, there was a girl who could make anything out of nothing. Stuff that stunned fiends and protected you. She'd be great to have around now," and he does share it with a fond note, "but I wonder if there's anything like that people have in their own worlds we could bring in? Anyone can throw a homemade bomb--"

--and he brings his arms down already, to imitate a throwing gesture--

"--and they don't need to learn how to fight."

Just how to have good aim.