It was Hana who peeked out.
She was dressed in plain clothes, and when she saw Chihiro's reflection through her glasses, she squinted her eyes and exhaled.
「It seems not. Thank goodness」
Chihiro is in there, too, but that's probably too much to ask.
Also, neither Chihiro nor Chisato, who oversaw the body, dared to point out what Hana should have understood.
And so, Chisato tilted her head as she moved her legs and flopped down on the bed.
「Hana-san? What's the matter?」
Chisato looked perplexed. Even Chihiro, who was inside the body, could tell it.
Well, although she was embarrassed to have the penis seen, she did not reject Hana's visit. It just a subtle subtlety of her mind.
Anyway, before Hana answered, Hana closed the door and walked toward the bed.
Their gazes do not move apart as they move. So, Chihiro's [Mind-Reading] is activated through Chisato, and Hana's feelings are transmitted to the siblings.
It is a faint emotion like longing.
Though Chihiro is at a loss as to how to describe it, if he had to guess, he would say that there are lilies blooming in the background.
「I thought, "I'm sure this is something that will happen"」
Hana walks around the bed and puts her glasses on the dresser chest beside her.
She then removes the extra items and leans back on the bed.
「Did Izumi tell you to do it? It's okay, you don't have to do everything just because he tells you to」
Slowly but surely, Hana walks up to Chisato and grabs Chisato's - or rather, Chihiro's - hand.
Her eyes are as gentle as her voice as she gazes into Chisato's still sticky palm.
「I'm sorry for doing this to your hand...」
Hana opens her mouth as her hand is yanked away.
A soft tongue licks off the semen. Despite a faint frown of bitterness on her face, Hana did not stop, and she continued to clean Chisato's fingers one after another with her tongue.
The siblings watched her with a subtle, ticklish sexual sensation, and soon the palms were completely clean.
Hana exhaled and looked at Chisato again.
「Thank you very much. But I wanted to do this」
「Then, let's do something more comfortable, shall we?」
Hana leaned forward and kissed Chisato.
Suddenly, Chisato's eyes widened, but she did not resist the movement.
Her lips were split open, and her hands were wrapped tightly around her own waist, but she remained still. Rather, she lay down on the bed to support Hana's movements, while she herself intertwined her tongue with Hana.
After a few moments, Chisato's arms were loosely wrapped around Hana's neck, and Hana slowly covered Chisato's body with hers.
For about a dozen seconds, the kisses that seemed to circle around Chisato's mouth came in succession.
Chisato takes a breather at each time, so she doesn't feel suffocated, but her thoughts are tossed about by the dizzying movements.
Such a pleasant feeling.
And at the same time, Hana kept her eyes open during the kiss.
Her cheeks are faintly tinted red. She is in a similar state as Chisato. If it were Chihiro himself, he would be a little hesitant to look at her regardless of the shame he feels.
"So, this is a sweet lesbian kiss," Chihiro thought.
This gentle kiss, which is different from his directed submissive kiss or the Hana-directed reprimanding kiss, seems to be an expression of Hana's love for Chisato.
「Fufu. You're so cute, Chisato-chan」
The kissing continued.
Each time, for a few seconds at a time, the overlapping of the lips increases in length.
This creates an illusion of time, and makes them think that the long kisses are only momentary. More and more of this debaucherous time is demanded, without limit.
And it feels good.
The girls devour each other's lips as they press their bodies against each other.
（Ah... right, Nii-san is left out of this...）
In between acts, Chisato sends Chihiro a thought.
（Sorry, Nii-san, I was about to get carried away. Would you like to take my place now?）
（Hahaha. Don't worry, just keep going. This is fun too）
Chihiro doesn't want Hana to resent him when she finds out later that they switched.
And sometimes, it would be good for Hana to have this kind of perk. Also, from now on, they will spend more time with her than before.
With this thinking, Chihiro adjusted the range of [Stimulus Sharing].
He cuts off the sharing with the other girls, and makes it two-way sharing only between Hana and himself. In this way, the pleasure of both parties should blend and dissolve.
Even Chihiro's body, which has male genitalia but no female genitalia, will be able to experience the girl's pleasure.
In fact, the quality of the pleasure changed by changing the way of sharing.
It was like, but much slower than, the waves of climax that he experienced when Kaede, his big sister, forced him to climax. The pleasure that made him feel as if his breath and voice would leak out spontaneously became numb and ran through his body.
Perhaps it is like receiving a massage while lying on the bed.
Chihiro, who was in a position to simply accept Chisato's pleasure, let himself be carried away by the waves, and let his mind be swayed.
A few minutes later. The girls stop kissing and exchange a few words.
「*Pant*... Hana-san, you're a good kisser, aren't you?」
「Thank you very much. The other day, Takatsuki-san gave me a compliment too」
Chihiro remembers it. That was when he first started using his new ability for sexual intercourse.
Aika was moaning prettily when Hana caressed her. Although he doesn't care about the play between girls, he feels a little bit jealous of it.
「Fufu. So, did you say that Aika-anesama feels better than Nii-san?」
「...No. She said she prefers kissing Chihiro-kun」
Hana answers Chisato's question with a sigh.
Huff... Chihiro was relieved by her answer. Even if Hana had no bad intentions toward Aika, Chihiro could not help but feel depressed if he was inferior to Hana.
However, he secretly thinks that he should practice kissing more.
「It can't be helped. Aika and Nii-san are lovers」
「Then, how about Chisato-chan? Who do you like better, me or Izumi kun?」
「That's a difficult question. I mean, I can't kiss Nii-san」
As long as they coexist in the same body, there is nothing they can do about it.
Chisato laughed softly and continued.
「I don't intend to make a lover. However, if I had a body of my own, I would like to have a child with Nii-san」
Hana's face quickly clouds over.
「But I love Hana-san, too」
Chisato's voice was interrupted by Hana's voice and she snuggled closer to Chisato.
She then separated herself and started to undress Chisato's upper body.
「Oh, Hana-san, it is embarrassing...」
「It's okay. Chisato-chan has a beautiful body」
The girls are getting quite into the play, but Chihiro wonder if Hana will want to die when she looks in retrospect.
Anyway, he doesn't want to interfere because Hana might kill him if he points it out.
In no time at all, the sweater and bra are off.
What is exposed is, of course, Chihiro's flat chest. But still Hana lovingly runs her fingers over them.
The nipples were pinched tightly, and Chisato let out a squeal.
「Fufu. Chisato-chan's nipples are very sensitive」
If the sensitivity is high, it is most likely due to Hana.
Hana kneaded her fingers around the nipples, which were small for a man, to make them erect, and blew on them.
A shiver runs down the spine.
Then Hana's face came close to the nipple and she took it in her mouth.
She rolled it around on the tip of her tongue, which made Chihiro, who was inside the body, feel indescribable. Chisato, who is experiencing the same pleasure, puts her arms around Hana's body as if she can't help it.
Still, Hana does not stop.
Her tongue wriggles around, looking at Chisato's reaction, trying to find a weaker way.
Chisato's body twists and turns.
A light urge, similar to a climax, rushes through her. Hana smiles in satisfaction, and exhales as if to let out her pent-up sensuality.
「The one who is doing the work and the one being done can feel good together, huh...? I hate to praise Izumi-kun, but it's a perfect ability for girls to have with each other, isn't it?」
Having shared the same pleasure with Chisato, Hana was getting the same amount of pleasure as Chisato was getting.
In the sense that both parties can feel good without changing the relationship between S and M, or rather between "friend and cat", [Stimulus Sharing] is certainly compatible with lesbian play.
However, while this act is lesbian play, it is clearly different from ordinary lesbian play.
Chisato lifts her hips and insists on pressing the "it" against Hana's lower abdomen.
「My part is very sad」
There, of course, was not a female organ but a penis.
Since Chisato is not wearing panties now, Hana must have a direct feeling of the erection.
Hana receives it with a complicated expression on her face and asks Chisato.
「Do you want to do it? Chisato-chan」
「Yes. I want to. I want to be inside you, Hana-san」
After a moment's hesitation, Hana nodded her head as if she had no choice.
Their positions reversed.
Hana lies on the bed and opens her legs. Chisato reached Hana's lower part, rolled up her skirt, and put her hand on the inside of her panties.
They were of different shades on the front and the sides, and had a ribbon on the front.
「That's a cute pair of underwear. Where did you get them?」
「A lingerie store in front of the station. I'm a little embarrassed」
Hana's face looks happy even as she says this.
If Chihiro asks her the same question, it must have a totally different answer from now.
「Well then, Hana-san」
Hana is demurer than ever.
Leaving her legs open, Hana waits for the penetration of the penis. Her eyes seemed to be moist with anticipation.
Her secret place is already wet and trembling with expectation.
（Fufu. Nii-san, don't you think it's a bit of a perk?）
Normally, Chihiro wouldn't normally see Hana this submissive.
（But I think it's also because Hana-san is expecting Nii-san's penis. Because...）
Hana has been accepted many times and has become familiar to Chihiro's body.
And now, without daring to say anything, Chisato put the penis against Hana. As she sank her hips down, the sensation of both inserting and being inserted hit her at the same time.
「Ah, this is...」
「It's more than I thought it would be...」
The two girls mutter to each other.
Hana, who had left her mouth open, exhaled with a moan.
「This is... This pleasure of the penis becomes a habit, it is Izumi-kun's fault...!」
The expression on Hana's face as she grips the sheets tightly is endlessly adorable.
（Chisato, please make Hana feel good）
（Yes, of course, Nii-san. I'm going to do it even if you don't tell me）
Chisato slowly moves her hips.
She inserts the penis up to the root, and then pulls it out to the tip. Every time Chisato moves her hips a little, the pleasure of both the penis and the vagina comes over her, and her body shakes a little.
At this rate, it might come out soon.
Such a thought arose in Chisato's mind, but surprisingly, the piston movement continued for a long time.
Apparently, a woman's sexual sensation does not directly lead to ejaculation.
The girls were gradually becoming lewd and debauched, partly because Chisato kept the movements as far as she could control it.
And so, the girls never stopped.
Chihiro, whose body sensation is only indirect now, does not know whether he is the one who is holding them or the one who is being held by them.
「Hana-san, you're so cute...」
Love and longing, such things overflowed.
Before long, Hana was shaking her own hips and drowning in this unusual pleasure.
The pleasure is sent to the penis intermittently and is stored in it. It consumes them, or rather the three of them, with the woman's ecstasy that envelops their whole bodies.
「Hana-san, I-I can't take it anymore...」
「Me too, I can't take it anymore, let's come, let's come together, okay...?」
Their movements quicken.
Their lower abdomens collide with each other, seemingly without thinking of the consequences, and the bedroom is filled with the sound of their pounding. And Chihiro now is mixed in with them.
Suddenly, their unique world without the presence of a man is thrown off balance...
The girls screamed at the same time.
Something burst deep inside their bodies, in the area where a woman's womb would be. Chisato and Hana each arched their backs, and their genitals exploded beyond their limits.
Spurt! Spurtttt! They spurt out a lot of liquid in succession. The liquid seems to have accumulated as much as they were rushed.
Chisato pulled out the penis while breathing with Hana.
「...It felt good, very good」
「I'm glad. Chisato-chan was pleased」
Hana then slowly raised herself up.
She reaches for the penis, saying that Chisato should just lie down since she had just climaxed.
「Here, let me clean this up for you」
「Ah, then, please let me do it too」
Chisato nodded and pushed Hana down again into a 69 position.
The girls continued to make love until they got tired and Riko came to call for them.
「You two! You can do it, but make sure you take a bath, okay? And don't you make a meal out of it forever!」