Ah okay, thanks for clarifying. I guess I'll wait to see what Jinni says then!Juju Yeah, I was going to leave it to Jinni to puzzle out how much 100 vs 500 yen actually does in terms of POWER, because there's no reference for clearly offensive imprints out there, and having it be equal to the defensive capabilities of intangibility is kinda sketch. And no, there's no strict limit to how much money she can Prime, outside it being dependent on how long she's willing to soak in a hot bath for/experience short-term hypothermia. If you wanted to go strictly with Imprint-maxing, then over the course of 3 days, if all she did was soak in a hot bath irrespective of the effects on her body while staying up...she would end up with around 432,000 yen of Primed coins, separated roughly in increments of 144,000 yen at 66% efficacy, 33% efficacy, and 0% efficacy.
If Samuru, on the other hand, was being a normal person who soaks for 20 minutes in a hot tub after a day of fun, she'd come away with around 1000-2000 yen of Primed coinage that would beginning degrading towards 66% efficacy from that time until the next time she takes a bath.