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Chapter 91 Part 2

Separating himself from Sera, who had gone limp and drained of strength, Yuu then lay her down on the bed and got up.

As expected, he felt fatigued and thirsty.

He was aware that Elena was staring at him with a passionate gaze as if she was appealing to him for something.

But for the time being, he simply untied the leash that was tied to the doorknob and then left the room, leaving her alone.

When Yuu came back into the room again, he saw Elena lying face down in a very unsightly position.

Seeing Elena, who had her mouth gagged, go *mumumumu* as she looked at him desperately, Yuu smiled as he helped her up.

「Big sis, did you think you got left alone again? You’ve got it wrong. I thought you might be thirsty too, so….」

In Yuu’s hands were a one-liter container of barley tea and a glass, and on top of that, he had a towel hanging on his arm.

Once he put them on the table, he first removed the ball gag that had been stuffed in his elder sister’s mouth.

He then wiped her mouth and chin, which had turned into a mess due to the overflowing drool, with the towel.

「Yu…u… Yuu! Yuuuu!」

Elena’s voice was husky as she got overcome with emotions and single-mindedly called out Yuu’s name over and over again.

After patting her head lightly, he poured barley tea into the glass.

「Big sis, open your mouth.」

*Aan~* In front of Elena, who obediently did as she was told, Yuu swirled the glass and poured the barley tea into his mouth.

He then poured the contents into Elena’s open mouth.

「Fwah?!」

Elena was surprised, but as soon as she realized the fact that she was getting mouth-to-mouth feeding from Yuu, the corners of her eyes dropped and she accepted it.

「Is it good, big sis?」

「Yes, among all the tea I’ve drunk thus far, it tastes the best.」

「Ahaha, you’re exaggerating. Do you want some more?」

「Yes, I do! Give me more, give me more!」

Like a baby bird begging to be fed by its parent, Elena flapped her mouth open and closed.

After that, when he slipped his tongue into Elena’s mouth as he gave her mouth-to-mouth feeding for the third time, she showed a happy look on her face and twirled her tongue with his, too.

It was on the level that, if anything, she seemed to desire Yuu’s saliva more than the barley tea.

After exchanging deep kisses for a while, Yuu temporarily moved away from Elena, only to see her looking up at him with her tongue sticking out with a craving look on her face.

「I’ll let you suck something even better, big sis.」

「Ahaan!」

When Yuu got down to his knees right in front of Elena and thrust his hips out, a look of pleasure appeared on her face as if she had a heart mark in her eyes.

「Amm, amm… lick… Amm… so good, it tastes so good… Yuu’s dick… Amm… Nmm, nmm… Lick, sluurpa… Hnn! It’s getting bigger.」

Elena was still restrained, but she took the whole penis into her mouth and sucked on it with such vigor that it seemed as if she was a dog that had been given her favorite food.

Immediately after she licked it all over, not only with her tongue but also by moving her face up and down, *slurp, slurp* she stuffed her mouth with it and began to suck on it vigorously.

In an instant, Yuu’s penis rapidly became full of vigor and stood tall, piercing into the sky.

Elena, who looked at it with entranced eyes, traced the popping veins with the tip of her tongue and kissed the glans over and over again.

No sooner than that… She fervently moved her face and crawled her tongue along the frenulum.

「Kuh… Aah, that feels so good, big sis.」

「Y…you see…」

Hearing Yuu’s words, Elena looked up at him and was trying to say something.

Yuu put his hand on his sister’s head and stroked it gently.

「It’s okay. Go ahead and say it.」

The moment she saw Yuu’s smile, Elena began to speak as if she were dumping out the emotions that she had been unable to put into words until a moment ago.

「Y, you see, I’ve been enduring it. All this time. But as I watched you had such amazing sex with Sera… twice… I had this desire to have such sex with you, too!

As I watched you do it with Sera in front of me, I had a mixed-up feeling of jealousy, envy, and strangely enough arousal… My body was tingling and aching and I couldn’t stand it, on top of that, Yuuchin No. 2 was moving inside me so vigorously, which felt better than when I masturbated on my own. And yet, no matter how much time passed, I couldn’t cum even though I felt like I was going to cum, so I am still feeling frustrated. So! W, what I want to say is… Err, you see, I want you to put your pee-pee in my pussy, Yuu! I want it so bad! A, and then, you see… Like Sera, I want you to pour your semen inside me, too! Please… I beg you. It’s fine even if it’s just for tonight…I want you to have mating sex with me, too….」

Maybe that was the expression of her wish spurred by her instinct as a woman that transcended broconhood.

Overcome with emotion, tears were dropping from Elena’s eyes.

They would have to say goodbye to Sera today, so he had planned to have sex with her as much as he could.

And he had thought that it would turn into a threesome in the process, but as she got onboard with Sera’s plan, he had no choice but to abandon that plan.

As expected, if they continued to leave Elena alone, Yuu would feel sorry for her, so he was thinking about keeping her company.

He did not expect that she would beg him to have mating sex with her to such an extent, though.

Yuu recalled what Inui Rumiko from the Ministry of Health, Labor and Welfare had told him.

She had told him that he could impregnate his half-sister and have her bear his child, even ignoring the risk of incest.

In fact, this past Sunday, he had had creampie sex with both Miku and Sera.

In that case, then it would not really matter if he cum inside Elena as well, would it?

However, if they had a baby, what kind of relationship would they have?

「Yuu?」

Elena looked up at Yuu, who was falling into thought for a while, with a worried look on her face.

「Ah… No, it’s nothing.」

For the time being, Yuu decided to undo the restrictions on Elena’s legs.

However, Elena, who had been restrained in the same position for so long, was unable to even stand up and remained on all fours.

「Yuu… U, umm.」

As he looked at Elena who was showing him her buttocks defenselessly, an idea popped into Yuu’s head.

He stroked her shapely buttocks and spoke to her.

「Big sis, I’m going to have you move to the bed just like this. Here, let me support you.」

「…Okay.」

He thought about undoing the restrictions on her arms as well, but it would probably be difficult to do that without the person who tied them.

As Elena sported a dubious look on her face, he supported her body from behind and made her head toward the bed.

Sera, who had been mingling with Yuu in the reverse-sitting position until just a few moments ago, was lying on her back in the same place, lying horizontally on the bed with her buttocks on the edge and her legs spread.

He moved Elena so that her face was coming to her nether region.

Then he switched off and removed the vibrator that had been left inserted in Elena’s secret place.

The vibrator was soaking wet, and love juices were trickling from the tip.

「Just like this, I’m going to insert it into you from behind. And this time, big sis, why don’t you return the favor to big sis Sera in full?」

「Aah~, fufufu, sure.」

「Hnn…hmm?」

When Sera looked up as she felt a strange feeling on her nether region, she saw that Elena was sucking on her vaginal opening, sucking the cloudy fluid that had been steadily leaking out.

「Hyaan! Wha… Huh? E, Elena? Ahn, hey… D, don’t suck me there!」

「Let me have some of that Yuu’s semen, too!」

「Ah, ah noo! I’m still sensitive down there!」

Seeing Elena begin to lick Sera’s secret place, Yuu spread Elena’s buttocks and fit his penis into her soaking wet vaginal opening.

Here comes the threesome. I’m sure it will turn into a nice memory for big sis Sera, too.

Yuu nodded his head and penetrated Elena without hesitation.