Kinda wondering about that too. Mc seems to be pretty aware of how weak he is so maybe he will be back to get it later when he can actually use the sword properly?
No freaking way that's way too messed up. I guess... How do I say this, it need two people to unleash the full power but reality say otherwise. The older own the armor. It's only natural for the oldest to have it... Hmm wait now that I think about it, what if he rebuild the house again. No, the uncle own it for now. But I think he doesn't care. His brother died protecting him, that's the bare minimum he could do at the moment plus the armor is heavy. Sorry for yapping nothing (￣∇￣")
I get why he buried the armour with the brother but it's confusing as to how he will unleash the swords full power now, cause I don't want anyone digging the grave open to get the armour back