"I mean, my darling, if you're asking me personally? I'd say fires on the train are generally a bad idea," Gen told him, wry and amused and serious all at once. "Even if it'd let you make all sorts of things in the process. Perhaps just when we're off of the train?"

Though usually those sorts of experiments took setup, which they didn't have time for if, say, a meteor was hurtling at the planet.

Gen smiled fondly then. "You're always really generous, Senku-chan."