How Using My Oppai Skill to Enlarge My Sister’s Breasts Led to Building a Harem - Chapter 21 Part 4

Chapter 21 Part 4

Side Story: Ayaka

That evening, after practicing anal sex with Miyabi-san, I was in Ayaka-san’s bedroom.

“I’ve been dying to have sex with you, Ayaka-san.”

“Y-Yes… Miyabi told me.”

Ayaka-san looks nervous, unlike her usual self. The idea of anal sex must feel daunting for a refined lady like her.

(What do I do? I don’t want to push her and make her hate me.)

“Are you… against doing it in your butt?”

“It’s not… that I dislike it, but… having a gentleman see my anus is… embarrassing…”

I’ve seen it plenty during our intimacy, but saying that wouldn’t help.

“I want to connect with you, Ayaka-san. To love you with our bodies.”

“Uuu…”

Her face flushes red.

“It’s not lust. I want to do it because I love you.”

“I… understand. But please… don’t hate me after seeing my dirty place.”

“Of course not!”

Love makes such things irrelevant. I don’t even think it’s dirty.

“Shall we lie down then?”

“Y-Yes…”

I have Ayaka-san lie face-down and take out massage oil.

“First, I’ll relax your body with oil.”

“Hyan!”

We’ve done massages before, but this time feels different. It’s preparation for an unconventional act—anal sex.

“Relax. Let the tension out of your butt—”

“Nn… nnn… aa…”

I place my palms on her plump buttocks, rubbing in slow circles. Her soft, pudding-like flesh molds to my hands with each movement.

“You’re still tense. Relax.”

“Yes…”

Following my words, she eases up. Her closed thighs gradually part, revealing her beautiful pussy and pink anus.

(Such a gorgeous anus—she has nothing to be ashamed of.)

It’s so enticing I want to lick it right away, but that might upset her.

“Good. You’re relaxing.”

“Uuu… you’re seeing it…”

Her embarrassment brings tears to her eyes. Panicked, I try to reassure her.

“Ayaka… we’re husband and wife, right? There’s nothing embarrassing between lovers.”

“Husband and wife… Yes, you’re right. I shouldn’t be ashamed if it’s my husband.”

“Exactly. I’ll love every part of you, Ayaka.”

“Darling♡”

Ayaka-san melts at our pretend-marriage talk. It’s not deception—it’s what convinces her most.

“Let’s feel even better. It’ll reach deep inside your butt, right?”

“Nnn… faa♡”

I channel pleasure through my hands, slowly relaxing her anus.

“Nuu, darling♡ It feels good…”

She looks back at me, entranced, her anus pulsing open and closed.

(Damn… so cute. I want to dive in.)

Her anus tempts me, but I stay gentlemanly, kneading her buttocks to cherish it.

“Ready, Ayaka?”

At the right moment, I take out my aching, oil-slick cock and rub it against her glistening anus.

“Y-Yes… for my beloved husband, I can endure anything…”

Her butt trembles slightly, likely from fear.

“It’s okay. I’ll stop if it hurts.”

With my hand’s power, I can sense pain, ensuring I won’t harm her.

“Yes… I trust you, darling.”

“Good. Relax… Fu… nn…!”

I press my cock against her anus, sinking the glans into its pink center.

Gugugu… Gu… Nyu♡

The glans is swallowed by her anus.

“Nhaa♡”

Her pulsing anus eagerly takes my shaft after engulfing the tip.

“Ii! Yaa…♡”

“Ku! Aa… it’s swallowing me…”

Her volleyball-like buttocks make an exquisite anal pussy. Despite its excretory purpose, it’s a perfect cock-stroking hole.

Michimichi♡ The intestinal walls grip me—not too tight, not too loose, perfectly balanced.

“Ayaka-san! This is amazing… feels so good…”

“Your precious part… in my butt…”

“Our butts are perfectly compatible…!”

Her anus fits my cock like it was made for me, clinging tightly.

Nuchu♡ Nuchu♡ Nuchu♡ Nuchu♡

“Uaa… incredible. Tight, slick… my cock’s tingling.”

“Aa… uu♡”

As I grip her buttocks and start thrusting slowly, she shudders, hiding her face.

“Ayaka, show me your face… Let’s feel good together.”

“Y-Yes… darling.”

Her smile is awkward, but her body is clearly enjoying it.

Nuchu♡ — Paan♡ Paan♡ Paan♡ Paan♡

I grip her buttocks and thrust harder.

“Ii! Aa♡ Haa♡ Haa♡ Haa♡ Aan♡♡♡”

Our flesh slaps together, echoing. It’s as pleasurable as vaginal sex.

“Amazing… perfect, Ayaka! Aa, aa, aa…”

“Haa… nn♡ Darling… it feels good? I’m… nuu, feeling good too♡”

Ayaka-san, feeling it in her anus—I’m making her feel it. That realization makes my love for her explode.

Paan!! Pan! Pan! Pan! Pan! — Paan♡♡♡

“Hiii♡ Darling♡ Too intense…”

“But your anus loves it rough!”

It’s true—her anus has softened, clinging to me like a pussy.

“This anus…”

“An♡ Haan♡ Nn♡ Nn♡ Nn♡”

“Is mine!!”

Dochun♡ I thrust to the hilt.

(I’ll never let her real husband have her… I won’t let another man touch this perfect woman.)

“I love you! I love you, Ayaka…!”

“Ngoo♡ I love you too♡”

Our hearts and bodies are one.

(This is it! This is what I wanted. I love you, love you, love you…)

This inner connection sets my heart ablaze.

“I’ll never let you go, Ayaka!! Aa… gu!”

“Haa, haa, aa♡ I’m cumming♡”

“Let’s cum… together!!”

I climb to climax, sharing her sensations.

“Ayaka… u!”

“Aa, aaa~~~♡♡♡”

As her anus clenches Kyu♡, my cock erupts, unloading all my pent-up desire into her intestines.

“Ooo♡ I’m… cumming with my butt♡”

Ayaka-san reaches an unladylike anal climax.

“Uu… so embarrassing… aa♡”

“It’s our secret… Feel good as much as you want.”

“Aa♡ Haa♡ Haa♡ Haa♡”

Only I get to see her like this. I hug her from behind, vowing never to let go.

“Let’s love each other more, Ayaka.”

“Aa… I’m so happy, darling♡”

True to her words, we keep going, burning with passion, thrusting endlessly.

…

For a while, our nightly intimacy thrives, like newlyweds.

“Almost four months now?”

“Yes, it’s growing well.”

At the dining table, I notice Ayaka-san’s belly.

(If only I could say the child in there is mine…)

But I can’t. It’s frustrating that my genes are in this beautiful woman, yet I can’t claim it.

“It’s okay, darling.”

“Huh? Ayaka-san…”

We only play husband and wife in private, not with servants around.

“The maids here are trustworthy, so a little… chu♡”

“Ayaka…”

My beloved leans against my shoulder.

“Rub it.”

“Aa… it’s warm…”

I feel the life in her growing belly, clear even without my powers.

“I’m so happy.”

“Me too.”

Meeting this perfect woman, saving her from illness—it feels like a miracle.

“We can’t marry, but will you stay with me forever?”

“Of course, I’ll never let you go.”

I’ll make her mine.

I’m just a student now, but Miyabi-san and I are plotting to oust her current husband.

When that succeeds, I’ll claim her body and heart, becoming her true husband.

“—Absolutely.”

I whisper in her ear as she presses close.