I guess Cleria is doing ok as his (weak) sidekick for now. But I'm still disappointed there isn't really anything she excels in that he could rely on her for, as for now it's just reading the native writing system, which he'll surely learn soon.
It'd be great if he could at some point build a gun for her, even if it's an inferior one that's not exactly the type he carries. Something like a gun that uses magic particles and principles (i.e. a magic tool-type gun, maybe something that uses magic stones as ammo/power source) sounds like good innovation, incorporating both magic and technology as a result of him learning from magic.
But I may be expecting too much from this story.