After washing Rias and carrying her to the sofa in order for her to relax and recover Blaze began making breakfast, incredibly simple compared to Rias's impressive cooking skills but she was able to make a simple breakfast containing things such as rice, fish and miso soup without letting anything burn
As she was cooking Herm piped up "So... I'm guessing you had a good time last night?" she grinned
".... Yeah" replied Blaze, blushing as she remembered everything from the night before
"That's good, a family should enjoy themselves together, plus you have both gained alot from last night"
"I mean I know that we were more connected than usual but shouldn't we both have just improved the same as we usually do when we sleep in the same bed?"
"You're forgetting that exercising imporves the rate at which you absorb lust power from other people, the same thing aplies to anyone who is your wife, as such with the amount of 'exercise' you and Rias did last night you both absorbed the lust coming off of each other faster than usual, and in her case it made her stronger physically rather than strengthening her bloodline abilities and her magic reserves" explained Herm
"I thought people were powered up by what they normally specialized in, such as me and Xenovia becoming more physically stronger while Rias and Akeno's magical abilities improve" Blaze questioned
"Normally that is the case but last night with how long you were going and how hard you were thrusting do you think Rias would have been able to stand it, my powers made it so that as your wife she was able to keep up with you so that you can feel pleasure together, as such the power she absorbed from you was focused on increasing her stamina and physical abilities so that she could last longer without running out of energy"
"Does that mean Rias is going to end up like me if we keep going?"
"Not to the same extent but she will become stronger and have more stamina compared to normal, but due to it being my energy that makes her improve unless she wants to be toned like you her physique won't change" Herm answered "also due to the fact that neither of you had decided whether you wanted to have kids yet I made it so that you were infertile just in case meaning that all of the cum that you filled her with was just pure energy as none of it had any life force meaning that you essentially filled her with a more pure form of the energy that normally flows from you when you touch meaning her base stats will have improved quite a bit"
"So cumming inside someone gives them a power boost?" Blaze explained, nearly dropping the bowl she was holding
"If you don't want kids yes, if you do want kids it is pure lifeforce and my abilities will make it so that you are both more fertile due to the lifeforce" Herm replied
"So any time I have sex with someone I either make them stronger or pregnant?"
"Pretty much"
"So Rias got so much stronger but what about me?"
"Well to start out with you've reached balance breaker properly"
"WHAT THE HELL!" Blaze shouted out loud which surprised Rias
"What's the matter?" Rias asked, looking over the back of the sofa to look at Blaze
"Herm just told me I reached balance breaker" Blaze responded in shock
"Really? how?"
"Simple, balance breaker is achieved by doing something that breaks the balance of the world, this can be as simple as being strong enough to break the balance of the world through sheer power in the way that Vali did, the willpower of the person being strong enough to force a change within them or by achieveing a long held wish which causes the emotions to surge forth and push a sacred gear that responds to feeling past its limits" Herm explained, speaking out loud so that Rias could hear as well "in Blaze's case her power was already at the threshold, her willpower is decent and her emotions went wild last night, as you personally experienced"
"So you're saying that I reached balance breaker through sex?" Blaze exasperated
Speaking so that only Blaze could hear her Herm said "hey, Issei was able to do it from just pushing Rias's nipples, you touched her nipples, her ass, kissed her lips and fucked her nealy unconscious, if Issei did that in the main story let along balance breaker he would probably have surpassed juggernaught drive right then and there" before speaking out loud again "the feeling of a fusion of 2 souls who were both virgins losing their virginity to a beautiful woman like Rias is definately enough for you to reach balance breaker"
"Thank you for the compliment Herm" Rias smiled
"You deserve it" Herm responded "now because it is a proper balance breaker it comes with some extras, I won't tell you about all of them right now as some of the abilities are quite specific but one of the better ones is that your ability to absorb lust has expanded, initialy you could only absorb the lust of people in the same room as you but now that limit no longer applies, as such at the moment your limit would be around the size of Kuoh academy but as you become stronger it will grow"
"So I'll be getting stronger faster?"
"So long as people are thinking of you yes"
"That is both a good thing and a bad thing as I don't really want to know when people are thinking of me in private, but the extra boost is good"
"The amount of power you get will also change depending on the feelings they have as the precision of my powers have increased, people who just think you are good looking will give you a small amount of lust energy, people who want to date you would provide more, those who want to fuck you even more and those who want to be with you and become your wife will give the most, for example Rias her is giving you quite alot at the moment but due to it being only her the quality makes it only slightly more efficient than what you would normally be getting in class" Herm continued
"So to sum it up Rias and I will be getting stronger faster from now on and it will be sped up even more if we fuck more" Blaze summerized
"Pretty much"
"Alright now that you've explained everything come bring me to the table, your energy might have made it so that I was able to last the night but that doesn't mean that all that exercise didn't make me hungry" Rias declared, her stomach making an small audible grumble
"As you wish Rias" Blaze replied before her own stomach made a large grumbling noise showing that Rias wasn't the only one who was hungry, carrying Rias to the table
"You know I could get used to you serving me like this, it reminds me of home" Rias smiled as she began eating the food "although maybe I will be the one to continue cooking, although this is good I think we can both agree I am the better cook out of the 2 of us" she giggled
"I have no problem with that, I completely agree that you're the better cook" Blaze replied as she sat down across from Rias as the house slowly descended into a quite discussion between them as they ate.