Nobody in the group that traveled with Kagome knew, but for a time the Bone-Eater's Well had had a reciprocal quality to it. If one threw in something that wasn't a demon/oni/youkai, they would get something of roughly equal value back. It had been a tradition for a generation or two before the well mysteriously went dormant as if it were building up to something big to go up to the well, throw something in, and show what you got in return to your friends.
The villagers had still been arguing over what that stick with that odd round pinkish red thing on the end was supposed to be when Kagome arrived.
A certain lecherous monk who wandered through the area had had no idea about this tradition when he went to hide some artwork that the villagers might find questionable for one of his stature to possess should it be discovered.
Five hundred years in the future, a teenager was surreptitiously checking to see if he was being observed as he hauled an old bicycle into the well house. Considering what he'd gotten from the old well near his family shrine when he'd tossed in that packet of fireworks, he was sure that he'd get something really neat this time.
If his father caught him tossing his bike into the well however...
The coast was clear.
With a "Three, two, one, heave!" the bicycle went down into the well and vanished in a flash of blue.
Once he was certain that the bike was gone, the teenage boy raced over to the well to see what he got in return.
He sighed in disappointment when his eyes met a small pile of old scrolls.
Knowing that his dad would complain if he came in here and found junk in the well again, he went down and retrieved them.
Out of curiosity, he opened one of the scrolls before he chucked it into the trash. His eyes widened to epic proportions when they took in what was upon it.
Hell yeah! the boy thought This is better than a manky old bicycle any day.
Five hundred years in the past, a monk peered into a well from whence there had been a brilliant blue flash and found himself staring down at a strange wheeled contraption.
Perhaps one of the villagers would be able to make heads or tails of this...The monk thought as he hauled the object that seemed to be mostly made out of metal out of the well.
Two generations later, a young monk used a rather useless skill that he'd picked up during his childhood in an unsuccessful escape attempt when he kidnapped a young girl in a green and white school uniform - not that he knew that was what she was wearing - who had a wheeled device similar to the one that had finally fallen apart to the point that it was unable to be repaired several years before which had belonged to his father and his grandfather before him.