Flashback----
One day, Kurosaki Renya and Lavinia Reni were spending some relaxed time together in Renya's room.
"I never thought we'd end up coming to Japan again, you know," Lavinia said.
She was sitting on the bed, Renya's head resting on her plump thighs, as she gently cleaned his ears.
"...Ah, it's been four years, hasn't it? Certainly, there was quite an uproar back then," Renya said, relaxing into her gentle touch, facing toward her lap.
"That 'quite an uproar' was partly because of you being a handful, Leo-kun, you know?"
"...The folly of youth,"
Lavinia responded with a mock scolding, "No!" but she wasn't genuinely angry. It was more a gentle tolerance of "What am I going to do with you?" As proof, she stopped cleaning his ears and lovingly stroked his head.
What the two were reminiscing about was one of the unforgettable events amidst the incident years prior.
Back then, Lavinia had been caught off guard, and her body was taken over by Augusta of the Purple Flame.
Realizing anew the importance of his childhood friend Lavinia at that time, and feeling intense rage toward Augusta, Renya succeeded in regaining Lavinia by achieving Balance Breaker.
After that, without letting the Fallen Angel organization, nor even the mages and sorcerers of the "Gray Sorcerers," lay a hand on her, he personally conducted magical and medical examinations to confirm there was nothing wrong with her mind or body. Only then did Renya finally breathe a sigh of relief.
And, with a possessive feeling towards Lavinia, he recruited her as his Servant.
"Lavinia. You are mine. I don't want to give you to anyone. I want you to stay by my side forever."
"Y-yes... I want to stay with Leo-kun forever, too. Please take care of me."
Faced with the intense gaze and words of Renya, who was younger than her, Lavinia, unusually flustered, nodded, her cheeks and even her ears turning red.
After that, once Lavinia had fully recovered, she was reincarnated as a Devil using the Queen piece.
Then, having already had a relationship of four years, it was only natural that the two, whose hearts were already connected, would progress to that stage.
Sitting facing each other on the bed, Renya and Lavinia, almost simultaneously, brought their faces closer, closed their eyes, and pressed their lips together.
"Mmm, smack... Leo-kun, I love you, I love you... mmn, I love you so much."
She had loved him before, but now Lavinia, who harbored feelings for the Renya who had saved her, not just as a younger boy but as a man, felt her overflowing affection grow with each touch of their lips.
It was the same for Renya.
She was an older girl he had thought was cute ever since he first met her. And before he knew it, she had become a girl who was incredibly precious to him.
With each touch of her soft, warm lips, Renya's affection and possessiveness for Lavinia grew, and before he knew it, he had wrapped his arms around her slender waist and pulled her close.
"Mm, Leo-kun... mmmn, smack, fah, mmmm, slurp, licking licking..."
As his tongue parted her lips, Lavinia's eyes widened in surprise, but she quickly closed them and accepted it, timidly offering her own tongue to intertwine with his.
Their tongues tangled, licking inside each other's mouths, swallowing the mingled saliva. With each exchange, Lavinia felt a heat building in her lower abdomen.
"Mmm chuu...! Hah, hah... Leo-kunn... my body feels so hot..."
How many kisses did they share? By the time they stopped, Lavinia's mind and body were melting. Her usually gentle eyes grew hazy and languid, looking at him not as a younger boy, but as a man.
"...Is this okay?"
As Renya reached for her clothes, Lavinia gave a small, but clear, nod.
Renya slipped off the simple one-piece dress she was wearing.
The sweet scent trapped beneath her clothes was released, revealing Lavinia's alluring body.
She wore a light blue lingerie set. Her enormous 100cm breasts, barely contained by the bra, seemed ready to spill out at any moment. The crotch of the matching panties was stained with a dark patch, evidence of the arousal heightened by their kisses.
Seeing that the naturally airy and gentle Lavinia was showing signs of arousal felt incredibly lewd.
Renya reached around her back and unclasped her bra.
"Ah..."
Her breasts, freed from their confinement, bounced softly. With the bra removed, the fruits were exposed.
White, large, soft breasts. In contrast to their size, her areolae and nipples were small and a beautiful shade of pink.
"Ugh... d-don't look so much... it's embarrassing..."
Even though she sometimes slipped under the covers in just a shirt, having her bare boobs stared at was apparently embarrassing. Lavinia tried to cover them with her hands, but her slender arms were far too delicate to hide such large breasts.
Rather, the way they squished and changed shape only looked more lewder.
Renya moved her hands aside and touched the now exposed chest, lifting the underside of her breasts with both hands.
"Ah... mmn..."
At the sensation of being directly touched for the first time, Lavinia let out a sound that could have been surprise, ticklishness, or pleasure.
"Ah, mm... mmm... ah, mmm, ahh, haan, mm, mm."
As Renya caressed the shape of her breasts, sometimes bouncing them playfully with his hands, Lavinia began to voice her growing pleasure.
"Ugh... yah... d-don't do so much... It's embarrassing... Only playing with my boobs like that... makes you seem like a baby, Leo-kun..."
"Can you still say that now?"
With her hands on Renya's arm, Lavinia looked pleading. It was unclear whether she was trying to stop him or wanted him to touch her more.
Responding to Lavinia's words, Renya latched onto her beautiful, erect nipple.
"Ah!? L-Leo-kun, you're sucking my nipple!? Ah, mmmn! Ahn! N-no, you can't! Ah, mmm!"
With one nipple being teased between his fingers and the other being sucked, Lavinia instinctively clutched Renya's head.
Renya didn't just suck; he licked it with his tongue, pushed it in, gently bit it, savoring it fully.
"Mmm, mm... that's... ugh... I, I'm, already, already...!"
With the intense yet teasing stimulation, Lavinia was nearing her limit. She squirmed, rubbing her thighs together, holding Renya's head as he continued to toy with her abundant, soft tits.
Sensing this, Renya, as if delivering the final blow, pulled one of Lavinia's nipples with a gentle bite while pinching and pulling the other with his fingers.
"Ah... mmmn! No, I'm cumming!"
The pent-up frustration reached its limit and was released. With a soft spurt, Lavinia's love juices squirted, soaking into the crotch of her light blue panties, creating a larger stain.
She hugged Renya's head tightly, her eyes wide open, staring at the ceiling, her tongue unconsciously lolling out, moving as if lapping at the air.
Even in the midst of her climax, Renya continued to lavish attention on Lavinia's nipples without letting go…
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