I don't usually leave comments, but this Chapter 41 update is hilarious to me, because the mangaka completely fumbled how a water wheel is supposed to work, yet here Reito is saying he could be a carpenter if he can just get blueprints emailed into his brain.
So for one; this water wheel's purpose is to transport water from a river into a canal at a higher elevation. So my first question is "where's the canal?" Or "where's the structure that flows into the canal?"
Secondly, the water wheel is hella inefficient, because it uses slats instead of buckets, so its ability to lift and deposit water is abysmal.
Thirdly, in that first full shot of it in place, its not even properly fixed into the support pillar in the water, it's axel is just sitting on top, that's even if it has an axel in that shot. THEN the very next page, the artist forgot to even draw the support behind the wheel from that angle.
Bro just winged it for sure, didn't even look up images of water wheels on Google or Yahoo.