A Man Who Lost Confidence, to a Gentle Chastity-Reversed World

Chapter 81: A Deep Kiss with My Little Sister ☆

Yuki crawls over me, her body close. Her strength isn’t much, and even frail me could push her off, but I’d never do that. It’s less being pinned and more like she’s playfully clinging to me.

Her trusting, innocent eyes make me want to believe she relies on me. For my tainted mind, her gaze is too pure, too direct.

“Ehehe… Shun-nii, am I heavy?” she asks, worrying even about that, not slapping me for spilling my desires. I’ve flip-flopped on my promises, yet she shows no dissatisfaction.

So I answer, “N-No, not heavy at all…” She smiles, slowly pressing closer. My heart races, but I can only accept what my sister does.

“…You saying that makes my heart race so much… I’m happy and just wanna cling. Sorry?” she says, blushing, looking up at me from my neck. She shouldn’t apologize, and I’m nowhere near worthy of her sweet words.

“N-No, I’m the one who should apologize… for changing my promise so fast…” I stammer.

Just a month ago, I lacked the courage to act on my feelings for her, fearing I’d ruin her life. Now, my heightened emotions have flipped that resolve.

“I-I thought about not wanting to ruin your future, or you hating me… I got scared, just being a coward…”

My feelings for her aren’t the only reason—my weakness is a big part too. I’m not a man she should be happy about, and I can’t even fake pride. Only with Yukari-san and Mom’s support am I here.

She shakes her head at my pathetic self, gripping my T-shirt, speaking with slight unease.

“No, you’re not a coward. You’re kind, warm, and accept even someone like me… My future includes you.”

Closing the distance, she continues.

“I made such a bold request, you could’ve cut me off, but now you even say naughty things to me. It makes my body warm… all floaty.”

Her cheeks flush deeper, eyes softening. Her words and actions stir sexual thoughts in me.

“You might worry about hurting me or being disliked, but I don’t need that concern. I’m your sister, and there’s no way I’d hate you when you let me lean on you like this.”

She overestimates me, drowning in lust. As I think to correct her, she squirms.

I notice her focus shifting to her lower body. She moves unnaturally near my stomach, and my perverse mind, quick to catch erotic cues, senses it.

“…I’m the one looking down at you like this. You could push me away, but… sorry for being a sister who can’t hold back…?” she says, straddling my lower abdomen, twisting slightly. It feels like she’s rubbing against me, though maybe it’s my filthy imagination.

“I’m expecting you to… do naughty things with me, take my first time… I know it’s greedy…”

Her hand moves to her crotch, amplifying my delusions. I start to believe my cute sister, trusting me, is aroused.

“…Every time I heard you stayed over or went to a hotel, I wondered if you were doing naughty things… But I’m not as stylish as others, and as your sister, I shouldn’t be greedy…”

“Yet, knowing you see me erotically… I want to keep being greedy… so…”

Her round, double-lidded eyes lock onto mine.

“…I want to give my first time to you, Shun-nii… I’ve been so doki-doki…”

I overheat, nodding and wrapping my arms around her back, emphasizing my intent.

It’s too suave, unfit for me, but I want to feel her as my sister and a girl.

“Y-Yeah… I-I want to take your first time too…!”

My resolve to cross the line with my sister solidifies. She kisses my lips lightly, like her usual pecks, but it feels deeper.

“…I’m so glad… take care of me, okay?” she says, relieved, pulling me up by my arms. We sit on the bed, facing each other.

“Can I… undress you?” she asks. I nod, and the act begins.

She removes my T-shirt, exposing my unmuscular upper body. It’s worthless compared to a girl’s.

“Your bare body… since the bath, right? It’s so exciting…” she says, staring despite seeing me before. The embarrassment of being studied doesn’t fade. She touches my dull body, her gaze drifting to my lower half.

My cock, knowing we’ll have sex, asserts its hardness through my pants. The excitement of a beautiful girl—not just supporting me but allowing me her first time—is immeasurable.

“It’s already hard… fufu,” she murmurs, amused, eyeing me as she reaches for my pants. I try to control myself.

“Shun-nii, tell me if it’s scary or hurts, okay?” she says, concerned, pulling off my pants and staring at the tent in my boxers. It’s a dirty tent from lusting after my sister, yet she looks at it fondly.

“You’re really excited… even through your underwear, it smells good…”

Sniffing with a “sunsun,” she murmurs a request.

“…I wanna see it…”

Her sweet plea makes me nod reflexively. With clumsy hands, she pulls down my boxers.

Undressed by my sister, both sweet and shameful, I’m fully naked. My cock springs out, maybe with a “burun,” pointing skyward. Yuki gasps, “…Ah,” eyes widening.

“It’s… bigger than before, I think…” she says, staring. The cruel contrast between her perfect face and my grotesque cock is stark.

“And your cock… smells stronger than in the bath… so erotic, I’m all floaty…”

Saying “sorry,” she strokes it. Her curious, slender fingers stimulate me, driving me wild.

“Haha, you look like you’re feeling good… twitching from my hand,” she says. I haven’t changed since the bath, unable to resist a girl’s touch. I let out a pathetic “Ugh…”

She gently holds my moving cock, exploring its shape. Her occasional breaths fuel my soaring lust.

“Y-Yuki… it f-feels good…!” I say, scared I’ll climax easily if I’m not careful, voicing my feelings.

“Ah, sorry, Shun-nii! Your cock’s sensitive, right…?” She releases it slowly, watching me breathe deeply, then murmurs, “Okay,” and reaches for her clothes.

“I’ll… undress too, okay?”

Each piece she removes hardens my cock more. Her plain white bra and matching panties reveal a girl’s underwear.

“Since the bath, I haven’t grown…” she says apologetically. But her feminine form accelerates my arousal, nearly maxed out at her underwear.

Then she unhooks her bra, revealing her developing breasts. Small, pink areolas and nipples, youthful yet guilt-inducing, bare before me.

She’s shy but doesn’t hide, letting me look. Then she slides off her panties.

“Shun-nii, sorry for my plain body…” she says, belittling herself. But I can’t see her that way and must tell her.

“N-No way… your body’s so cute… a-and erotic…” I say. Her form, between girl and woman, excites me unchangingly since meeting her.

Budding breasts, budding waist, healthy thighs, and hairless private parts—all spark my arousal. She has no reason to feel inferior; her form is so erotic I want to touch myself.

“Shun-nii… I’m happy,” she says, accepting my crude words. Being called “erotic” might not feel good, but she allows my lust.

“Shun-nii, I might be greedy… will you forgive me?”

“Y-Yeah…” I reply. Her greed is natural to me, not needing forgiveness.

“I always kiss your cheeks, and it makes my head floaty. So now… I wanna kiss you a lot…”

My cock twitches at her naked, cute sister’s request. She gasps, “Ah,” blushing but meeting my eyes.

Erotic, cute, dear—my mixed emotions pull me closer. She closes the distance too.

“Shun-nii…!” She pulls my shoulders, kneeling, and takes my lips. I wrap my arms around her delicate shoulders, indulging.

Her small, moist, plump lips steal my reason. Selfish, I want to taste her mouth but can’t be forceful, just savoring her lips.

“Nn, n-… nha, ha, nn…”

Clinging to each other, kissing, we must look like lovers to outsiders. I know I don’t match Yuki, but for now, I want to ignore that.

The prolonged kiss with a girl who desires me feels like a sexual act. Our pressing kisses continue until Yuki pulls back.

“Phaa, Shun-nii… can we do more…?” she asks, resuming the kiss. When her tongue brushes my teeth, I delusionally hope she wants a deeper kiss.

In that moment, I think I opened my mouth. Yuki slides her elastic tongue in, stealing my saliva.

“Hyun-nii, nn, s-sorry, nha,” she murmurs, holding my head, earnestly devouring my mouth. Her soft upper body presses against my plain frame.

Her breasts squash against me, nipples hardening, unreservedly hitting me. My cock digs into her soft stomach, the eroticism amplifying her kiss, heightening my arousal.

Dazed, I wrap my arms around her back. Wanting to be close, to savor her erotic body—my impure desires overflow.

“Nn, ha, nha, Shun-nii…!” she moans, not rejecting me. My embrace makes her hold me tighter, tasting my tongue. My cock, rubbed by her skin, drowns in pleasure.

My usually bright, lively, kind sister is so absorbed in our kiss. That thought alone makes me want to burst, my balls already full.

“Ha, Shun-nii… sorry, I wanted to taste you so much… was that okay…?” she asks, eyes melting. Her expression sends shivers down my spine.

Dominated by the urge to cum, torn between not wanting to dirty her and wanting to, I confess.

“I-It’s okay… but sorry, it feels too good…!”

No matter how many times I cum, I can’t resist a girl’s erotic expression. My cock, touching her skin, is on the verge of exploding, likely to stain her.

“It’s really twitching… gonna cum…?” she says, reaching for my precum-leaking, rock-hard cock. The moment her pretty fingers wrap around it, my restraint snaps.

“Uah, I’m cumming, sorry!” I cry.

Semen shoots out, “byuru-byuru,” hitting her stomach, coating her beautiful skin.

She should want to avoid such filth, but she murmurs, “Ah, Shun-nii’s cumming… your cock’s twitching…!” accepting my release.

I’m soiling her body, and though I know it, her continued stroking makes me empty everything.

“…Amazing… it’s so hot…” she says, stroking my cock with her right hand, scooping semen with her left. That sight alone makes my sensitive cock rise again. A girl and semen are irresistibly erotic.

“Like before, it’s so thick… your semen, from me…” She brings the cum-covered finger to her face, sniffing, then licking it with her saliva-coated tongue.

“Ehehe… I thought it was unique before, but knowing it’s yours, it’s delicious,” she says, smiling, licking my desire off her finger. I’m helplessly aroused, my cock staying hard, ready to stiffen again.

“And you’re looking at me with such a red face. Knowing you see me as a girl… it makes me so happy.”

My body’s burning, tension unending, no sage time, just persistent erection.

“Yuki, sorry for dirtying you…” I try to apologize, but she shakes her head.

“No, your semen’s so erotic… I don’t feel dirty. The smell’s amazing…” she says, affirming my actions. I feel spoiled, scared I’m forcing her, but I can’t suppress my lust.

“But I might wanna say greedy things…” she adds, moving her cum-covered finger to her crotch, touching her sensitive spot. Her face drowns in pleasure as she moves.

“…Sorry, Shun-nii. I’m so excited… I don’t get this wet alone… it’s overflowing…!” she says, the “guchu, guchu” sound echoing in the quiet, her pussy and fingers making water noises audible to me.

“Shun-nii… being with you… I can’t stop being excited… are you disappointed…?” she asks anxiously, trying to pull her fingers away from her slit. In this world, she might fear I’d dislike her showing desire. The reversed world makes brother-sister dynamics complex.

But to me, Yuki’s my cute sister and an irresistibly erotic girl. With her and others wanting a deep bond, I have only one thing to say.

“Disappointed? No way…! Seeing you so erotic makes me happy, so excited, so let’s… together…”

Before I can say “have sex,” she draws closer, her voice mixing joy and lust.

“Shun-nii… I’m so happy… then, I’ll ask…!”

Her words reach me slowly, my aroused sister’s final push.

“I want to become one with you… I don’t know if I can do it better than others, but I’ll try, so…”

Taking a breath, my cute sister declares.

“My pussy… I want your cock in it… I want you, my beloved Shun-nii…!”

Struggling not to touch her slit, she cries out. I nod, my cock twitching wildly.