Today, I have an important experiment to do. Helping me are Maki and Rebecca.

"A, ahahaha."

"Try to not move too much."

"S-sorry, it tickles."

Well, I can't really blame Rebecca. I am passing a brush on her skin, so obviously it would tickle. Luckily, Maki is helping keep her in place, so nothing got blurred. I wouldn't be laughing if I had to redo all this hard work.

The experiment today has to do with my looking into Characteristic Magics.

Basically, I've finally figured out how Healing Lovers works… at least on the basic level.

So far, I've only thought of it like this: it generates mana, which is more efficient than the mana we naturally generate, and heals the magic circuits for the people involved. The amount of mana generated and circuits healed depends on 2 factors, the intensity of the sexual act performed, and the feelings of the people involved. It can only be performed between me, Lovers' Candidate, and my Cards.

I've basically just accepted it until now, but recently I started looking into it. How does it generate mana? Why does it depend on feelings and the act done? Why can I only do it with my Cards?

While I've yet to find the answer to all of those, I did figure out one: why can I only do it with my Cards?

In summary, it's because of our magic circuits. More specifically, the ones that Lovers Arcana put in us.

When someone becomes a Devil King Candidate, they gain their Arcana's magic circuits. Their Cards gain a downgraded version of those same circuits. The interaction of our Lovers magic circuits is what's responsible for Healing Lovers' effects.

That's already a pretty big discovery. And it also begs many other questions. Like, does Swordia, who was a Card for multiple Candidates, possess multiple Arcana magic circuits? How about former Candidates like Rikimaru and Seigi?

While these are all interesting questions that I'd like to investigate in the future, I decided to focus on something with more immediate practical implications for now.

Once I found out about the Lovers magic circuits, I examined my Cards and then, with Sein's help, I was able to draw artificial Lovers magic circuits.

The question that remains now is: will Healing Lovers work with those? That's why I'm having Maki and Rebecca help me, since they aren't my Cards, but are willing to do Healing Lovers.

I'm having both of them help me because I'm testing 2 different ways at once. For Rebecca, I'm using special magic paint to paint the circuits on her body. For Maki, I gave her special underwear that's engraved with the circuits, naturally, because we'll be doing Healing Lovers, it's open on the breasts and crotch.

And yes, it is really hard to concentrate with basically 2 naked girls in front of me, but I'm doing my best here.

After enough time, I finished painting the magic circuits on Rebecca. Maki had already been wearing the special underwear since before. I put the special pain away. Wouldn't want to make a mess. Now, everything is ready for us to begin.

"Alright, we're going to start soon."

"Y-yes."

"U-understood."

I activated Cutting Connect, Miyabi's Bloodline Magic. Feelings were hard to measure, but Cutting Connect helped with that. I needed to measure their feelings towards me to know just how effective a non-Card Healing Lovers is compared to a normal Healing Lovers.

[I have finished recording. Yuuto can start whenever.]

Of course, Sein will be the one monitoring everything, since I'll be busy. She'll keep track of the data to say how effective a non Card Healing Lovers is, compared to the normal Healing Lovers.

I cut off Cutting Connect and then sat on the bed. Of course, given the nature of the experiment, we were in Healing Lovers room instead of my study. I motioned for Rebecca and Maki to come to me, and so they did.

They both sat beside me and I started lightly touching their bodies. Considering what we did that time at the Yuugaoze mansion, I know they won't have any problems, but I still wanted to start off slow.

I started by touching their thighs. Rebecca's legs are slim, and I can easily feel her muscles. Compared to that, Maki has plumper thighs and they also feel a lot nicer to touch. Even so, they both have their own charm.

But I obviously didn't just touch their thighs forever. I eventually moved my hands to touch their most private place.

"An."

"Mm."

Despite them seeming nervous, it looks like they're starting to enjoy it. It wasn't long before wet sounds could be heard coming from both of their crotches.

I kept teasing them for a while. Eventually, once my hands were all wet and sticky, I figured it was time to move to the next step.

"Mm, nn."

"Mm, chuu."

I went for a kiss with Maki. Considering we almost had sex a while back, I figured it would be fine. She received my kiss and even tried to get her tongue involved. It seems she was enjoying it.

We kissed for a while before I ended the kiss. I know she still wanted more, but I couldn't just leave Rebecca there.

"U-um, actually, maybe I should leave you two alone?"

"No."

I then kissed Rebecca as well. She was surprised at first, but soon accepted the kiss.

Originally, I was only going to do this test with Maki. I knew she wouldn't mind it because, well, we had almost done it already. But, when I told her about it, she said I should also have Rebecca along.

Rebecca has a slight problem where she thinks that she's not attractive because she's not girly enough. While she is pretty tall for a girl, about the same height as me, I'd say she's more the "girl prince" from shoujo manga type of character than a boyish girl.

Anyway, Maki wanted me to boost Rebecca's confidence, which is how we ended up in this double test. Since that's the case, I might as well go for it.

As I kissed her, I groped her breasts. An advantage of Rebecca being tall is that her breasts also grew proportionally big, though they aren't on, like, Lizel's level. Still, I am a man, and a beautiful girl's breasts are a beautiful girl's breasts.

So I enjoyed Rebecca's body for a while. Then, I went back to Maki and also kissed and groped her. I kept switching back and forward, and then I also began to play with both their breasts and pussy at the same time.

"Aaaamm! Nnn!"

"Mmnhh! Nnnnnn!"

What can I say? I'm Lovers' Candidate. I made both of them cum while I kissed, groped and fingered them. And then I continued doing it until they were breathing hard.

I gave them a minute to recover. In the meantime, I might as well go over the results I already had.

[Yes. The results so far are-]

Despite Maki being the one who likes watching romance movies and stuff, Rebecca is the one who enjoys a deep passionate kiss more… no, wait, I should focus on the actual experiment.

[... The results so far are as follows.]

Well, short answer is that yes, it seems like Healing Lovers works like this. I'll admit I wasn't paying enough attention to say how effective it is compared to normal Healing Lovers, but that's why I have Sein on the lookout.

[I still need more data to precisely arrive at an effectiveness level.]

I see. So we need to keep going for a while more. I wonder what we should do next.

"Yuuto, don't you want to take these off?"

"It looks… quite packed."

Before I noticed it, Maki and Rebecca started touching my crotch over my pants, which were obviously quite swollen.

I hadn't taken off my clothes because I wasn't sure how well I could hold back, but since we've gotten to this point anyway, might as well go all the way.

While I was thinking about that, Maki unzipped my pants and pulled out my dick. She started licking it, and it seems she was quite enjoying it.

Maki sucked my dick to the very base, I could feel it going down her throat. Now that I remember it, didn't she and Rebecca also do this when I had sex with Miyabi in the Yuugaoze mansion?

After she sucked me for a while, she let go. It was as if she was telling Rebecca it was her turn. Timidly, Rebecca tried sucking me. While she couldn't take it all, I could tell she was doing her best.

"Ah! It feels good."

I told Rebecca that while looking into her eyes. I guess it worked as a boost of confidence, because she tried a little harder after that. Of course, I made sure to tell her she was doing good.

Once she ran out of breath, she let me go. It was at this moment that Maki made a proposal to her.

"Rebecca, let's lick him together."

"O-okay."

Rebecca joined Maki in licking my dick. The two worked together well, and it honestly felt so good that it made me forget why we were doing this in the first place.

After a while, I was made to lay down. One of them sucked my dick while the other sat on my face, so I ate her out. Once some time passed, they switched positions.

That kept going until I made each of them cum, and I also came inside each of their mouths.

The girls needed a second to recover. But I began undressing. At this point, I didn't care about anything anymore. Maki's special underwear is slightly off, and part of the circuits painted on Rebecca are blurry from her sweating, so the experiment is probably busted. Or maybe not. Still, I'm not stopping.

"First, it's your turn"

"W-wai- aaan~"

I pushed Rebecca down and then I went inside her. Despite her protest at first, her insides are now welcoming me and her legs have locked themselves around my waist, blocking my chance to escape.

Maybe because of how often she exercises, it feels like her walls are strongly tightening around me. But, somehow, probably because of her softness, it still feels really good.

Still, it was a little too much. Maybe taking her by surprise wasn't such a good idea.

"Mmm! Y-Yuuto~"

"Just relax. I'll take care of everything."

As Rebecca slowly breathed in and out, she calmed down and her body reacted accordingly. After a while, she seemed to properly realize that she was locking me in place with her legs. She was so embarrassed about it that her face got really red.

She looked away from me, but I made her face me again. I kissed her and then began to touch her body all over. After a while, I ended the kiss and then said while looking straight into her eyes.

"Sorry, I should have asked first, but I just couldn't hold back. I know you have some doubts about yourself, but I think you're just fine the way you are. It's a bit late, but I want to have sex with you, to make you feel good."

"I-it's fine. I was already prepared for something like this since long ago… Yuuto, make me a woman."

"I don't need to make you into anything, but I'll definitely teach you pleasures only women can feel."

I began to slowly move my hips. It feels much better inside her now. Rebecca was also clearly enjoying herself. I decided to hold off on the mana and other special stuff for this first time. Wouldn't want to overwhelm her.

Rebecca seemed to be doing her best to not let out her voice. Since she was timid about it, I figured I'd help her with a kiss. Surprisingly, she readily accepted it and seemed rather passionate about it with how tightly she was hugging me.

Of course, that meant her breasts were pressing against me, which felt really good. I also held her close, though I also used that chance to grab her ass a bit. It felt as good as her breasts, and it also has a fair size to it.

"Mmm, nnn~"

"Mmn, chuunn."

We kept that up until Rebecca ran out of breath, at which point we'd take a small break before continuing. Of course, I kept accelerating my hips, to the point where a considerably loud wet sound could be heard each time I slammed into her.

"W-wow, now both miss Miyabi and Rebecca have done it with Yuuto… I want to be next, aan~"

Maki was playing with herself as she watched us. Of course, I won't forget about her.

But for now, I should focus. I had already made Rebecca cum once, but now I've found her G-spot. And obviously, I kept attacking it again and again to make her cum again and again.

After a while, Rebecca was properly letting out her moans, though she was having trouble saying much more.

"Aaan! Mmmhh! Nnnn!"

"I'm going, to cum!"

Seeing her cute ahegao, I couldn't not cum straight into her womb. I definitely have some kind of fetish, because I couldn't stop before I emptied my balls in her.

I think Rebecca had another orgasm along with the creampie, because she was breathing hard and seemed to be in ecstasy. I guess it's Maki's turn while she recovers.

"This isn't the master-maid play, but, if you want it, it's here."

I sat and stayed in place. If Maki wanted it, she'd have to come to me. It wasn't the prettiest sight since I'd just pulled out of Rebecca, so it was covered with a bunch of fluids, but it didn't seem like Maki minded it.

"T-then, if you don't mind."

She came closer until she sat on my lap. It took her a second to position everything right, but she eventually got it right. She dropped her hips and, because of how wet she was, it easily slipped in.

"Mmm! It's so filling, I get what miss Miyabi was talking about now."

It seems that the girls have some interesting discussions among themselves.

Without wasting any time, Maki began to move her body. She was in control of the moving, but it seems she was also looking for the place where it felt best.

"M! Nn!"

"Did it feel good there?"

"Yes~"

Seems like she found her own G-spot. Since that's the case, I don't have to worry about distracting her anymore.

I grabbed her breasts and began to play with them. I also used my other hand to play with her clit. I learned that she was already quite developed before when I was eating her out, so I guess she's already masturbated a lot.

Regardless, it seemed that she was enjoying it considering how fast she was dropping her hips. Well, it was a bit annoying that she stopped wherever she had an orgasm, but it seems the solution has arrived.

"Let me help you."

"Rebe- aan! W-wait, I'm still- mmm!"

Rebecca grabbed Maki's hips and forced her to move, regardless of her cumming or not. That made Maki cum a lot quicker, and it also made my crotch a mess with her juices.

In any case, Rebecca wasn't letting Maki rest until I came, so I enjoyed tormenting her a bit by holding back, making it last as long as possible.

When I noticed she was actually nearing her limit, I came. Just as before, I emptied my balls inside her.

"Mmm! Aaan! I can see why miss Miyabi said we'd get hooked on this~ This might become a habit~"

Looks like I'm not the only one with a fetish.

Once I finished, Maki fell back, likely tired. Thank to Regenerate though, I was nowhere near done.

I brought Rebecca's face closer and kissed her, after that, I put her on all fours and slammed my hips into her like we were animals mating in the wild. I guess she enjoys being dominated.

Once I finished Rebecca's second round, it was time for Maki's, which was a lifting sex. Maki enjoys being made to cum repeatedly, and she also really enjoys creampies.

We kept going for as long as we could. At some point, Maki took off the special underwear and the paint on Rebecca's body was washed away by sweat and other fluids. Still, none of us minded it, and I eventually put them on top of each other and enjoyed them both together.

But I hadn't noticed the time. It was already night and we had yet to come out of Healing Lovers room since the afternoon. Maybe worried about us, Miyabi came to check.

"W-wow, you're still at it. Don't mind me then."

It seemed she was going to leave, but we all had the same idea and stopped her. On that night, I enjoyed the trio of friends to my heart's content.

…

Oh, the experiment, right.

Well, Healing Lovers can be performed with those artificial circuits. It seems to be less effective than just doing it with a Card, but not so much that it becomes impractical.

Besides, Sein says there are improvements that can be made to the artificial circuits, so I can probably get them to 100% efficiency, or maybe more if used with an actual Card. I can foresee a lot of fun experiments in the future.

"Nana, report."

"Y-yes. After careful investigation, while it would be possible to break through the barrier and spy on Yuuto's mansion, it would be noticed, so I can't recommend it. The barrier also filters what can be noticed from the outside, so there's not much to be gained by simply observing them through it."

Not knowing what was going on inside Lovers Mansion would prove to be quite a problem for Hierophant's team.

Hirono had already noticed how quickly Yuuto and his Cards were growing more powerful. They couldn't afford to waste a lot of time with the investigation. Still, rushing in with incomplete information would also be fatal.

"I understand. Then, Sol, Ken, plan B. Observe Yuuto and his Cards even closer. Hinata, support them. I don't want any of you to let the smallest detail escape. If their breathing rhythm changes, I want to know."

""Yes."" "Y-yes."

Not knowing what was happening inside Lovers Mansion was troublesome, yes, but they could mitigate the damages as long as Yuuto and his Cards still showed up in public.

While it is much harder than simply knowing what and how they are training, it is also possible to estimate their strength by comparing their current muscle mass, breathing rhythm, and other things to what they already have registered.

Of course, this plan would no longer work if Yuuto and his Cards simply holed themselves up in Lovers Mansion until they were ready to fight. But currently, Hirono had no reason to suspect they were planning anything like that.

"Also, I want to hear everyone's opinion. Should we fight them head-on or should we try a sneak attack?"

At Hirono's question, his Cards stopped to think in order to help him formulate the best possible plan.

"Of course a frontal assault!"

"T-this is a hard question, isn't it?"

Well, almost all. Barbara and Hinata were exceptions. Though Hinata was an unexpected one.

But the remaining Cards, Ken, Sol and Nana, reached an agreement with their conclusions. A sneak attack would be difficult, but, at the same time, they don't have enough manpower for a frontal assault.

"Yeah, that's what I was thinking. Should we simply go with the lesser of the two evils? … Wait, I might have had an idea."

Needless to say, Hirono had never been faced with such a situation. But it's because of that that he was able to grow. With a spark of creativity, he arrived at an answer he never even thought of before.

With that, Hirono ended their meeting for the night. But he reminded his Cards to redouble their efforts in observing Yuuto and his team, so that they can gain the most amount of knowledge possible.