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A lot of things happened this day.
Benladann was now resting because she suddenly felt very sleepy after eating a million things.
I checked her body, she didn't seem to be sick or anything, she was just resting, I guess.
Seeing her sleep over the bed peacefully fills me with the desire to protect her even more.
Apparently, she had increased her Cultivation Stage through the accumulated Mana in her Mana Core, which is of the highest talent possible, coupled with all the training we did with the Group Cultivation, and I am guessing that what we did last night HAD something to do as well.
I don't know what it could have been, but it was certainly something special… Maybe I was able to pour my mana into her? But I already do that regularly and not through sex…
I don't want to believe this is some Fate Series thing where they pour mana into their servants through sex…
Check "The Protagnist's Sister Is Actually the Strongest"!