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"... Indeed. I think so." Ayane returned your smile, her desire for your body obvious. After realizing that there was no one else around the makeshift arena other than you two, she let her body freely show, her most secret places greeting your eyes.
This small 'break' ended up leading to the end of the training session, with another steamy 'cooldown' between man and foxgirl leaving your eldest slave-wife out of breath and energy.
While having such a fertile fox-eared hag of a wife was a reward in of itself, you learnt a few things from this practice match.
From continuously using the the sword against Ayane's fire attacks—reflecting too much took up some mana.
And from testing against that clank—physical attacks could be deflected, but this had more to do with your raw strength and your ability when it came to sword fighting. Perhaps asking Bertha and Gerty in this regard could help.
But that wasn't everything when it came to your other wives. Herta, slightly miffed that she didn't see you practice (you invited her, but she said she was tired and wanted to sleep), demanded to see your strength in action. After properly 'correcting' her for being so 'unreasonable', you were generous enough to show her what your 'strength'. And, finding that both of you were refreshed, you told her how Mirror Blade worked in detail. The goddess jotted everything down with rapt attention, thanking you for— "Showing a stupid slave like me a place under such a loving Master."
Anyway, you hoped that with enough practice this rapier would be overpowered.
===
Some days after drilling, the expansion into the collapsed rooms was finally out of the way. Now you could go back to developing those same rooms into something useful with your Savant energy and knowledge.
Unfortunately it involved the tedium you'd been dreading.
Every factory room was automated with the help of some clockwork robots you fashioned together. It was rather funny to see robots assembling the factories that would create more robots. You were glad your Lunacy Savantae made this possible, though you felt worn out for the first time in a while.
However, the boiler room in particular was something you looked forward to completing. Despite not having many materials to make the money cheat you found with your knowledge of modern life, you weren't discouraged. When the process you wished to use for aluminum came around, you skipped past Deville-Pechiney and Hall-Heroult and you went straight towards Bayer. But first you opted on testing the three processes in order to see which was best. To neither you nor Herta's surprise, Bayer came on top again. And so, that would be your standard.
