All right, I satisfied my curiosity and went and had a looksee. It's a duplex house, 0.9 miles from my home, and the half where my package was sent had lights on upstairs, so, it's occupied. There goes my evil mail insurance fraud hypothesis!
Hopefully, they'll do the right thing and turn my package in to the post office/carrier, or even better, bring it to me if my name is on it, but, if not, I'll just have to let the resolution process with the seller play out. I'm not going to ask the recipient directly because the postmaster strongly advised me against doing that and I don't need any drama if they're cuckoo nutty and want that Japanese girl with a sword more than I do. Who knows, maybe that's how the Goddess of Statues wants it? These things are beyond mortal understanding or some shit...
I'd still like to know how they fucked up my address so badly--usually, when something gets misdelivered, it's to one of your neighbors on the same street, not all the way across town! Our house numbers aren't even remotely alike...