A Man Who Lost Confidence, to a Gentle Chastity-Reversed World - Chapter 13: My Sister’s Resolve, Amid the Steam ☆

Chapter 13: My Sister’s Resolve, Amid the Steam ☆

Yukari-san, hearing my response, shows a joyful expression—a smile free of the contempt I’ve always craved from others, man or woman.

Urged by her, I take another shower. She seems to have noticed my semen-soaked underwear already.

After washing my sticky lower half, I return to the living room. Yukari-san is waiting alone, looking anxious yet resolute, and bows to me.

“I’m so sorry. Once again, I acted selfishly because of my feelings…”

She tightens her expression and continues.

“…To be honest, seeing your kindness lately, Shun-sama, it’s like… the stopper on my emotions has come loose. I’ve never met a man as gentle as you before…”

I think I’m more indecisive than kind, but this isn’t the time to correct her, nor do I have the courage.

“As a housekeeper, I know I should restrain myself… but since seeing your, um, hardened penis that day… I’ve lost control of my brakes. And above all, I’m using Kaori-sama’s permission as an excuse.”

I feel she’s sharing her feelings openly. I understand losing control from kindness, being unused to the opposite sex. The intensity might differ, but maybe it’s the same feeling.

“I’m sorry for being so indulgent…”

I can’t respond properly, but I don’t want her to look so stern. With that thought, I speak slowly, my voice trembling.

“I-I don’t want you to think it’s indulgent… If you’re not used to men, Yukari-san… I could, maybe, be your practice partner…”

Even being a practice partner is fine. It’s more than I deserve. I want to connect with her, even as an outlet for her desires.

Mother probably knows something more than closeness happened between us and allows it. So, I can’t help but see Yukari-san as a woman.

I’m already drawn to her and, ideally, want deeper contact. But becoming lovers and being affectionate is too much to hope for—I understand that.

Yukari-san might open her heart to me, but she wouldn’t be my lover. We’re clearly not equals.

So, I decided to be her practice partner for getting used to men, a vessel for her overflowing desires. It’s my selfish fantasy, and if she rejects me, that’s that—but it’s all I can say.

“P-practice partner? Please don’t belittle yourself like that…! Shun-sama, you’re admirable, kind, and wonderful…!”

Still, Yukari-san builds me up. Knowing it’s her role makes my heart ache.

“As a housekeeper, I’m the one causing trouble… I’d be thrilled to get closer, but above all, I want you to tell me what you want, Shun-sama.”

She says she’ll prioritize my wishes, so I tell her I want to help when she’s struggling. We almost start arguing, but the front door opens—Yuki’s back from tutoring.

“I’m home! Oh, Shun-nii and Yukari-san are here.”

Seeing us, Yuki raises the corners of her mouth slightly but, maybe tired, collapses onto the living room sofa.

“Ugh, that was long… I’m exhausted…”

According to Yuki, just as tutoring seemed to end, they got a tough worksheet and couldn’t leave until solving it. After two hours of struggle, she finished.

“Oh, by the way, who’d you go home with today, Shun-nii? Not alone, right?”

Yuki looks at me, worried, making it unclear who’s older. It’s natural for me to be the one worried about—she’s that reliable.

I tell her I went with Asagi-san and Yamamoto-san. “That’s good, but…” she says, looking slightly uneasy.

“Have you already made plans for tomorrow?” she asks, so I say I haven’t set daily plans yet. Then I add, unprompted, “…I’m planning to go with you, Yuki…”

It was presumptuous, but Yuki’s expression softens with relief. I don’t want to worry the women around me, especially my cute sister, but I’m not sure if that’s the best approach.

Yuki goes to her room, and I start to head to mine. Yukari-san bows, so I nod back, adding I’ll return for dinner—a mundane exchange.

It wasn’t necessary, but I wanted to say something. Yukari-san’s smile is beautiful and kind.

In my room, I look over the schedule and handouts. The subjects seem similar to reality, including ones I struggled with, like PE and art. Especially PE—my lack of stamina, like for marathons, got me mocked. I want to participate seriously but not be treated like that again.

I pack tomorrow’s textbooks and new notebooks. There’s a cafeteria, but Yukari-san will make my lunch, so I’ll bring that.

After dinner, I go to my room, then head to the bathroom again. I showered twice today, but I want to soak in the tub, so I go for my third bath.

Checking no one’s there, I undress and enter. After washing again, I soak in the tub, letting out an old-man-like “Haaa…”

My body’s younger here, but I’m still a late-twenties guy inside. Lost in thought, the bathroom door suddenly opens.

Startled, I turn to see Yuki, a towel wrapped around her body.

“Eh… Y-Yuki?! W-why are you coming in…?”

Flustered, I see Yuki look slightly apologetic.

“Well, lately you’ve been so much kinder, Shun-nii, so I thought maybe you’d allow something you’d normally refuse…”

“Sorry,” she continues.

“I wanted to ask to wash your back, like when we were kids! But you were already in the bath… and then a devil’s whisper in my head said, ‘Just go in without asking,’ and I couldn’t resist.”

I can’t judge if that’s her “devil’s whisper.” But if she thinks so, maybe it is.

“Normally, you’d refuse right away, but I thought the current you might be okay with a little push… but it’s bothersome, right…?”

From what I’ve heard, I didn’t want much interaction with Yuki before. With the gender ratio or not, rejecting such a cute sister’s request is unthinkable as a brother. I don’t want to do that.

But it’s a problem for my rationality. Yuki’s figure is still developing, but only a thin towel covers her.

Even as my sister, she’s a beauty I’ve only known three days, and her presence in the bathroom excites me uncontrollably.

That excitement mercilessly hardens my uncovered dick. Knowing it’s bad to be seen, I hunch over and respond.

“…U-um, I was surprised, but… if you’re okay with it, Yuki, it’s fine…?”

I don’t know if it’s the right answer, and my voice trembles. I don’t think she’s joking, but I’m not confident.

“I’m the one asking, so of course I’m not bothered, fufu. Thanks, Shun-nii.”

Smiling slightly, Yuki approaches from the door. I’ve already washed, but I know saying so would be tactless.

I don’t have a towel. Leaving my rock-hard dick exposed is obviously bad.

“Uh, Yuki… could I borrow a small towel…?”

“Oh, right! Sorry, I wasn’t thinking.”

Yuki returns to the changing area, grabs a towel, and comes back. My intent was clear, thankfully, but it’s still embarrassing. Resolving not to flee, I take the towel, cover my lower half, and step out of the tub.

Turning my back to Yuki, I sit silently.

I’m scared she’ll say it’s a prank or a joke. Her hands don’t touch my back right away, heightening my anxiety.

“Okay, I’ll wash now.”

After a pause, I hear her lathering body soap, and I relax, arching my back. Then, her small hands, with foam, touch my shoulders and start scrubbing.

As she washes, Yuki speaks.

“You never really talked to me much, Shun-nii, so I thought you were avoiding me. Siblings probably grow apart as they get older.”

Her voice carries a mix of melancholy and resignation.

“But now, you’re accepting my impulsive actions so easily. You really are kind, Shun-nii… I wanted to thank you. Mother’s always said she wants you to get along with others, and that’s true, but… I want to be part of it, too, just a bit.”

Having never had a sister, I don’t understand that bond. But I respond with my honest feelings, unsure if they’re right.

“Yuki, you’re my precious sister… I might’ve been cold before, but… I’d be happy if you talked to me more from now on… I think…”

I stammered a bit at the end, and asking her to talk to me lacks assertiveness. But for me, not knowing our past relationship, this is my limit.

As Yuki stops washing, I’m too scared to turn around and stay still. Then, two arms wrap around me, and a soft body presses against my back through the towel.

“…Hehe, thanks, Shun-nii.”

Her voice, slightly tearful, seems filled with joy. Hearing her, I realize again how precious she is to me.

For about two minutes, we continue in that position, having aimless conversation. Yuki asks why I’ve changed lately or what kind of girls I like, listening to my clumsy replies with amusement.

During this, I suddenly notice our situation. Yuki, still hugging me, talks cheerfully. I don’t think she has ulterior motives.

But realizing this, I feel forbidden lust welling up. The towel over my lower half rises again, uncontrollably. I know it’s not the time, but the shape of her breasts pressing against me and her arms’ touch draw blood to my lower body.

“So then, Yui-chan was laughing at me, so—”

Yuki, peeking over my shoulder, notices the towel’s bulge.

As she falls silent, I can’t say anything. Getting aroused by my sister’s body and her noticing it makes me a failure as a brother. As I think of excuses, she murmurs.

“…Is it because of me, Shun-nii?”

With that, she swiftly pulls the towel away. There’s my pathetic, twitching dick.

“Yuki… th-that’s not okay… ah!”

I try to stop her with reason, but she grabs my dick from behind. It’s a fleeting thought, and though her touch is hesitant and weak, my excitement surges.

“It’s… so big… amazing… it’s such a naughty shape.”

Muttering, she rubs my shaft from behind. Glancing sideways, I see her blushing but brimming with curiosity.

Did my lack of restraint flip a switch in her? Her irregular movements send pleasure crashing into my dick.

Having my dirty dick stroked by my cute sister—no endurance in my balls can withstand that.

“…I-I’m gonna come, sorry!”

Yelling, I ejaculate in her hands. The spurting semen arcs, landing on the bathroom floor.

“Ah, it’s coming out, Shun-nii’s…”

Her bewildered voice as BGM, her hands are stained white. The ejaculation keeps spurting from the tip, unstoppable.

When the pleasurable yet overwhelmingly sinful act ends, I apologize to Yuki.

“S-sorry, Yuki, it felt so good, I couldn’t hold back, uh…”

No matter the context, I dirtied my sister’s hands with semen. As I try to explain, she moves in front of me, staring at my spent dick.

“This is… what Shun-nii’s like after…”

Saying this, she brings her face close and starts licking the tip, like tasting a candy’s end. An electric, jolting sensation overtakes me.

“Ugh, Y-Yuki!”

My gross moan from the stimulation makes her look at me with a mischievous smile.

“…It’s kinda weird-tasting, huh.”

Then she starts licking the semen off her hands.

“Hmm, but I don’t hate it. Maybe because it’s Shun-nii’s?”

Her face, undeniably that of a youthful beauty, tasting my semen—if I hadn’t just come, I’d be hard again.

“…You’re not mad, Shun-nii. Even with this… but maybe I’m being selfish.”

Watching me hold my breath, she speaks quietly.

“Sorry, Shun-nii… When I thought you got excited because of me, I couldn’t help reaching out. And once I started touching you, I couldn’t stop… I thought maybe we could get closer.”

Seeing her slightly downcast, I respond. If she truly wants to get closer, I have no reason to refuse.

“U-um… I’m surprised, but… knowing you don’t hate me makes me happy… and, uh, having you do this isn’t bad… yeah.”

It felt amazing, but I’m scared of her reaction if I say that, so I hedge. Yuki, who looked anxious, gradually brightens.

“There’s no way I’d hate you… I’m so happy you say that.”

She flashes a blooming smile.

“To be honest, when I heard you went home with those girls, I think I got a little jealous. Like maybe someone would take my Shun-nii away, or something selfish like that.”

After a pause, she continues.

“Of course, I shouldn’t stop you from spending time with others… but I guess I’m a selfish sister. Still, if it’s okay… I want us to be close, even if I’m being ridiculous.”

I don’t know what exact feelings she has for me, but as family, she wants to be close.

“I-I want to be close, too…”

I say, voice trembling.

“Thanks, Shun-nii.”

Her cute, satisfied smile, right after making me ejaculate, feels somehow delicate and pure.

I wash my lower body and leave the bathroom quickly. Staying with Yuki might lead to another mistake, and we both need time to cool off.

Yuki, probably embarrassed, agrees to my suggestion and says goodbye, staying to shower and bathe.

Calming myself in the changing area, I dress and return to my room. Despite some exhaustion, it’s a pleasant fatigue. Maybe I’m feeling the euphoria of human connection.

As I fall asleep, I recall today’s various encounters.

Thinking back on the day like this—something I’d never have done in my old world—feels a bit profound.