On the ground, next to the mailbox, there is: a weird rock!
Okay, sure, he'll - move the pain, apparently, on a dimension that feels like it has a "left" and a "right" despite not corresponding to anything except his new sense of the pain.
An object in the new-to-Seiji genre of Weird Flat Rock appears! This one is different from the one he found, though, both in shape and in general look. It feels the same to the touch - smooth and without any apparent temperature - but it's cranberry-colored and a little translucent and so glossy it looks like it's glowing a little. And it looks kind of like a bird's head - there's six flat sides instead of one, and one long triangle extending from the seventh.
He can still weirdsense the dull pain in his elbow, but it seems to be faded, somehow. Diminished.
Well, it was worth a shot.
Okay, do these two new Weird Flat Rocks do anything?
Well, neither did the first one. He slips 'em into his pocket and continues to his room, since he's abruptly aware that he's spent the past 30 seconds just standing in the hallway dumbfounded and would like to be dumbfounded not in the hallway.
Okay, so.
What was happening when the rock vanished? He - was wanting to be a wizard, or at least the equivalent of a wizard. He wanted this to be… maybe not the call to adventure, he'd kinda prefer to just live a life of magic-augmented fun and comfort, but the promise that this strange thing happening to him was more than just one of the millions of coincidences that happen every day but a strange thing happening to him, a gateway into a world that had been kept from him.
Are these rocks just… magic wands for whatever you want? Powered by pain, and not even that much?
He wishes to be a really good wizard who knows what he's doing.
So maybe he can't wish to know what he's doing, or maybe it's just that these rocks aren't strong enough. He didn't even get the elbow nerve, earlier.
He sets down the coins and smacks himself in the cheek as hard as he can.
With a giggle, he moves the pain one, two, three more times and collects three corresponding one-pointed Weird Rocks. Holy shit this is so cool.
Okay, so maybe he hasn't done much. But he's discovered at least a step towards being able to make a ✨ magic powers ✨ level Weird Rock. And he's getting a better sense for his not-pain sense, too - he can perceive differences in type of pain. It's weirdly… beautiful?
He should probably figure out what either type of Weird Rock can do.
… or maybe he can try to make more of the twofers! And see if he can hit three points! He slaps himself again, on both cheeks, repeatedly.
Yeah at this point he doesn't even care because this has gotten weirdly fun.
He makes the coins, though, and it's slightly less fun to smack himself when the pain is less pretty to his shiny new sense.
He calms down marginally and surveys the fruits of his labor. He's got six ones and three twos, for a total of nine shiny red rocks. They're - weirdly uniform, actually. He holds a one and a two up to his face and sees that they're the same thickness, that if he presses the edges together they look like they're part of the same object. He still can't tell if they actually emit light or if they just look really vibrant.
He should probably start testing, then. What's something small he can do with magic… well, he's hungry. He tries to make the first thing that comes to mind.