Yeah, I'm dropping this one. The whole ignorant MC and stupid... well, everyone else, has been done to death and is just the most tired out trope there is. Maybe it gets better, but from what I've seen so far, the author wants to hammer hard on that one trope so people will ignore the fact that there is no story. If you just want a gag manga, this one will work for you, otherwise its a bit of a flop.
EDIT:
I can already see how the next chapter will go. They will say it's a defective crystal or he purposely crushed it or some nonsense.