I don't know if I put the right category but on Wednesday the 3rd, I just could not Hiro at all. I went to all the spots that he usually frequents when he's not in the store, I stalked outside his store for a while, and I just could not find this man. I thought he got stuck somewhere so I went looking, but he wasn't even flying his drone anywhere. It wasn't even a day off.

I'm pretty sure I know what happened, just not the "why". I have had several times where I wake up and immediately fall through the ground, one such time I decided to look around since I saw a bunch of cows down there, and happened to find Hiro. I have also had days where I had trouble locating an NPC so it may have happened then as well.