A Cliché Multiverse Story

Rini shuddered as his warm breath caressed her face, his acceptance sending a pulse of delight through her. Seeing his gentle self, Rini felt a strong urge to push him down right here and now.

A berserker or not, she was a woman. His beloved sister, who treaded between monster and human.

The more Asahi accepted her for who she was, the more she leaned into her monster side. Tapping into her monster side filled her with strength. But it brought another agonizing problem.

Mating.

Even before she matured from her petite body, she had these desires to touch him. She usually suppressed them until night arrived and her friends started moaning in the room beside hers..

The cries of women bathing in her brother's love had driven her crazy.

Yet that feeling couldn't be compared to her current passion.

Her very soul ached for his touch, her nether regions wet with carnal desires. Nothing else entered her mind as the sensations had blurred her thoughts.

"Onii-san… I'm here to get cured… I can't stop now. Please… help me," she looked up with teary eyes. "Make love to me. Make me your mate..."

From the day she heard the women in her family moaning after the birthday, her body was unsatisfied no matter how much she soothed herself.

Feeling her fierce yearning, Asahi cupped her cheeks and ran his thumb over her lips.

"Gladly."

She leaned back slightly and raised her gaze, offering her lips once again. He gave another kiss as he entwined his fingers with hers.

Maybe it was the deep kiss or the fierce union of their hands that flared Rini's lust. She released a burst of fragrance that aroused Asahi until his cock woke up and strained against his shorts. Any man in his position would have done the same as her charm had skyrocketed, nearly to Ishtar's level.

The intricate dance of their tongues only stopped Rini when she was completely out of breath. Asahi brushed his cheeks with hers before he descended. Rini shuddered softly as her brother pressed his lips on her nape, sucking them as though he found them enticing.

"You climaxed last time with a kiss," he said.

Rini blinked her eyes, tilting her head. Her lust-filled mind took a whole moment to process his words. When she did, she was all red, huffing adorably.

"I touched m-myself."

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She couldn't find different words to explain her agonizing nights. The act of self-pleasure gave her some resistance, enough to hold back her gushing juice during the kiss.

"Oho, my imouto has become naughty."

Rini nodded blankly, her fingers reaching out to his pants. She found his cock pulsating with warmth even with the shorts over it. Her eyes lit up in anticipation. She hastily pulled his shorts and wrapped her fingers around its girth.

Asahi trailed his finger along her thighs, receiving a pleasant shiver from Rini. His hands dove into her frilly maid skirt and caressed her gushing slit.

"Hurry," a muffled plea escaped her lips as she caressed the crown of his member. "Onii-san."

Since she was wet enough, Asahi decided to skip foreplay this time. He never needed one but flirting and teasing his women got him more into the mood.

He pulled up his shirt and tossed it aside. Rini tried to get a decent look at his muscles, only to be lifted without a prior warning.

As they approached the bed, every second seemed like an eternity in Rini's eyes.

Asahi put her down and patted her cheeks. Rini snapped out of her daze and took a long look at his erect cock. She gulped forcefully, enough for Asahi to hear it. It was bigger and thicker than what she felt in her hand.

"C-Can I make a request?"

"Of course."

Rini raised her upper body with the support from her elbows and turned her body. Standing on all fours like an animal, she felt shivers of pleasure. The pleasure that came from being gazed at by her beloved in such an embarrassing position.

"Do me like this…"

Her monster instincts compelled her to do this. She imagined her first time with him in the same position. Nothing else seemed more 'right' to her.

Asahi cracked a smirk. The adorable frills clenched her wide hips, and her legs were parted just enough for a breeze to pass through. The stains of her desires could be seen on her wet panties. Asahi wanted to do more than just fuck her, but he held back for the sake of his sister. Her aroma or rather her pheromones were increasing with each passing minute. It was an invitation from her. An invitation extended to her mate to ravage her.

He had to satisfy her.

He trailed a finger on the soft skin of her butt. Rini's breathing became labored as her brother pushed the only cloth between him and her holes. The heat in her abdomen came to the breaking point, crying for a release.

Begging for him to penetrate her.

Asahi stretched her fleshy mounds. The strands of her juices created a web between her lips. Her bright pink, beautiful flower came under his passionate gaze. Rini clenched at the prospect of being watched so intently. Asahi pushed a finger inside her furnace-like heat, forcing a tiny moan out of Rini.

'It won't be a problem.'

He intentionally left her dressed, if her current outfit even qualified as one. He threw his shorts and aligned himself with his sister's hole. He rubbed his cock on her slippery pussy. As though knowing what he wanted, her pussy oozed thick juices onto his thick member. Rini separated her knees and raised her butt for her brother to see.

Asahi pulled back before he probed her luscious slit and shoved his tip inside her. Her blazing warmth enveloped his cock. She was truly in heat. The fact couldn't be denied.

Rini's back arched, and she gasped, her face contorting in pleasure. Her dripping insides fluttered and quivered before locking him down like a vice.

"Oh, Onii-sama!" Her eyes welled up with tears. Tears of pure joy slid down her cheeks. She finally bridged the gap between the brother and sister bond into a true lover's bond.

Asahi leaned forward until his cheeks brushed against her hair. He pulled her in for a kiss, which she happily reciprocated. Her nipples hardened even more as Asahi's fingers landed on her tits. He slipped his hands inside her black frilly swimsuit and rubbed her cherries.

With another movement, Asahi slammed himself to the hilt, finding literally no resistance as though she was born ready for this moment. Ready to breed with him.

Rocking his hips, he began hammering away into Rini's pussy. Powerful vibrations tunneled down his throat as Rini howled pleasurably into his mouth.

Asahi caressed, kneaded, and showered his sister's scrumptious breasts with all the love he could channel into his fingers. He showered every inch of her fair neck with hickeys before he pulled back. His fingers dug into her meaty butt. The big, fat flesh of her bottom easily sank against his warm palms.

He tried to be gentle in his movements, but Rini sank until her breasts touched the fluffy mattress.

"Hnghhh. Yes! More, Onii-saaaan! Hard. Harder!"

She was lively in her movements as though she hadn't lost her virginity moments ago. Her instincts wanted him to be rougher. It satisfied her heat. It made her feel more intimate with him.

Asahi was a little surprised by her wildness. Though it didn't last long. He resumed pounding her glorious body. Her mind was slammed with pleasure. The few words that escaped her mouth pleaded for more. He obliged his sister's request and attacked her G-spots with his glistening cock.

It took another few thrusts before Rini climaxed with a scream. Still obeying her desires, he kept moving. Something that sent larger waves of ecstasy into her mind driven by carnal desires. The spasms in her legs escalated several levels under his rough pounding.

He ripped the swimsuit covering her chest. Taking her hands, he pulled her back. Her flexible back arched at an unusual level, and he groped her breasts. The ripe and juicy tits contorted under his warm hands.

Rini went through several peaks in a matter of a few minutes. Only when another one approached, did Asahi feel a surge gathering at his tip.

"I'm cumming," he groaned.

"Please!" Rini pushed back desperately. "Inside! INSIDE!"

Her fierce shouts echoed. Asahi grabbed her hands and slammed his dick inside. His orgasm finally hit, and he came inside her.

Rini tightened in bliss but the pressure around his shaft kept building up.

"Take it out!" Rini gasped, her eyes widening in pleasure.

Asahi quickly pulled back and gently released her arms. She collapsed on the bed and turned over. Her face broke into a blissful smile as she separated her legs, giving him a clear view of her mature pussy.

"Thank… God… I warned Onii-san."

Asahi spotted zero traces of cum flowing out of her pussy as though her hole had shut itself to savor his seed.

(That's what happened, my love.)

Asahi breathed a sigh of relief. His life element had done its job. Rini had no chance of getting pregnant this time.

'She is too young.'

He observed his sister's naked form again. Her abs called for a caress, each one impressive in its own right. Her breasts were smooth and supple, more than enough to spill out of his hands. Her fair skin glistened in sweat produced from their hard work.

His little sister stretched her arms, her elbows squishing her breasts under her.

"Onii-san, I need more."

The lovely gesture hardened his half-erect cock.

He obliged with a nod and pressed Rini into the mating press. Her womb opened again, giving him another pass into her slippery hot hole.

He suckled on her breasts, which tasted sweet and salty at the same time from her sweat. He gave them the love they deserved, pulling at her rosy nipples with his nipples, sometimes using his teeth.

Their union kept going on for hours. Every time he came inside, her pussy would shut itself. Overcome with curiosity, he asked her the deal with it.

"I-I think… I have an organ for storing… semen."

Asahi's surprised expression made her giggle. Tracing her hands on his solid muscles, she pecked his neck.

"Onii-san… more?"

She had already broken Grayfia's record. Yet, she wanted more.

That day Asahi realized even a Devil, a being embodying the seven sins more than humans, couldn't be compared to a half-monster in lust.

If Rini was a hawk, then Grayfia was a mere chicken. The massive difference came from Rini's mating ceremony skill as it allowed her to keep her sexual desires topped up whenever Asahi was near.

Of course, Asahi showed her defeat all the same even though it took nearly seven hours of constant pounding to satisfy her 'heat.'