Distant clashes of steel and lightning echoed from where Kiba, Koneko, and the others continued their own training sessions. Akari and Akeno had moved far enough away that their private session felt isolated, almost intimate in its intensity.
Akeno hovered several meters in the air, her dual wings spread wide — one leathery devil wing, the other sleek black feathers from her fallen heritage.
Holy Lightning crackled around her like living serpents of gold and violet, the devastating fusion of her father Baraqiel's light-based power and her mother's Shinto lightning magic.
Akari stood on the ground, hands on her hips, looking up with a mocking grin.
"Really, Akeno? Is that your best? Because at this rate, Riser will fuck Rias many times in his bedroom and be done with it."
The words struck like a whip.
Akeno's eyes flashed with pure, unfiltered rage. Her usual playful "Ara Ara~" demeanor shattered completely. The air around her thickened with power as she raised both hands.
"You… dare…!"
A massive dragon-shaped construct of Holy Lightning roared into existence above her, crackling with destructive holy energy. She hurled it downward with a scream of fury.
Akari dodged swiftly, the lightning dragon exploding against the white ground in a blinding flash. The shockwave still grazed her, forcing her to admit internally that the attack had been dangerously close.
Akeno didn't stop. Her anger had unlocked something deeper. She spread her arms wide, and the white void above them warped as she forcibly created localized storm clouds — something that should have been impossible in this controlled dimension. Heavy black thunderheads formed instantly, lightning already dancing within them.
Akari's eyes widened slightly.
"I fucked up."
Countless bolts of Holy Lightning began raining down in a continuous, merciless barrage. The sky lit up with violet-gold fury as strike after strike slammed toward her.
Akari summoned her Boosted Gear on her left arm with a metallic clang.
Boost.
Boost.
Boost.
Boost.
Boost.
Boost.
Six boosts stacked instantly. Her body surged with power as she broke into a full sprint, dodging the lightning storm with blurred speed.
Bolts exploded all around her, leaving craters of scorched white in their wake. She weaved and rolled, pushing her enhanced reflexes to the limit just to stay ahead of the barrage.
But the storm was relentless.
Akari made a split-second decision. She focused on her Transform ability and shifted forms mid-sprint.
Her body shimmered. Brown hair lengthened into flowing crimson waves. Her height and build changed into Rias Gremory's elegant, voluptuous figure. But this version was completely naked, and between her legs swung a thick, throbbing 12-inch cock, fully erect and ready.
Man, I'm gonna calm my girl with this, Akari thought with a smirk.
She accelerated behind Akeno in her new Rias form, moving faster than the lightning itself. One arm wrapped around Akeno's waist, hand pressing firmly against her stomach. The other clamped over her mouth, muffling her surprised gasp.
Akeno's eyes widened in pure shock as she felt the naked body of "Rias" pressed against her back — and the unmistakable hardness of a 12-inch dick rubbing against her ass.
"Rias…?! That's impossible—!"
Her concentration broke instantly. The artificial storm clouds above vanished, the lightning barrage cutting off mid-strike.
Akari (as futa Rias) leaned in close, voice a perfect imitation of Rias's regal tone.
"Dress Break."
An unseen force tore through Akeno's clothes. Her outfit shredded and flew away in ribbons, leaving the half-fallen devil completely naked, her full breasts and curvaceous body exposed to the white void.
Before Akeno could react, Akari shoved her thick 12-inch cock deep inside her in one powerful thrust, burying it straight into her womb. At the same time, both of Akari's hands gripped Akeno's stomach and squeezed hard, fingers digging into the soft flesh.
Akeno's eyes rolled back as a loud, broken scream tore from her throat.
"Ahhhhhhh~!"
Akari didn't give her any time to adjust. She began thrusting with deep, powerful strokes, her cock slamming repeatedly into Akeno's womb while her hands continued squeezing her stomach rhythmically, amplifying every sensation.
Akari fucked her with relentless intensity, hips slapping against Akeno's ass as she drove her cock as deep as possible.
Akeno's moans were loud and shameless, turning into full screams every time the thick shaft bottomed out in her womb or Akari's hands compressed her belly.
"Ahhhn~! So deep—! Rias— wait, Ahhhhh!"
Akari kissed her deeply from behind, tongue invading Akeno's mouth while she continued pounding her womb and squeezing her stomach. Akeno's body trembled violently, her wings twitching as pleasure overwhelmed her.
Akari flipped Akeno around so they faced each other, lifting one of her legs and fucking her while standing.
She sucked hard on Akeno's breasts, alternating between them, teeth grazing the sensitive nipples while her cock continued its merciless assault on her womb.
Her hands never left Akeno's stomach, squeezing harder and harder with each thrust, forcing the fallen devil to feel every inch of her cock moving inside her.
Akeno's voice grew hoarse from screaming in ecstasy. Akari had Akeno on all fours in the white void, pounding her from behind like a beast in heat.
Both hands gripped Akeno's stomach in a vice-like hold, squeezing brutally while her hips slammed forward again and again. The wet, obscene sounds of flesh meeting flesh filled the empty space as Akari's 12-inch cock claimed Akeno's womb over and over.
Akeno's moans had become broken, desperate cries of pleasure.
Akari buried herself to the hilt one final time. She squeezed Akeno's stomach with maximum force, crushing the soft flesh between her fingers as her cock erupted deep inside her womb. Thick, powerful ropes of cum flooded Akeno's core, impregnating her instantly and deeply.
Akeno screamed louder than ever, the overwhelming pleasure and erotic pressure pushing her over the edge into a shattering orgasm that made her entire body convulse.
Akari held her there, still squeezing her stomach hard, until every last drop was pumped inside.
Finally, Akari pulled out with a wet pop. She dismissed her Transform ability, shifting back to her original form — plain brown hair, average height, cute face, and her usual exposed midriff.
Akeno collapsed forward onto her hands and knees, panting heavily, cum leaking from her used pussy. She looked back over her shoulder, eyes wide with shock.
"Akari-kun… you did this to me…"
Akari shrugged, still catching her breath.
"You were about to kill me, so I had to subdue you by transforming into Rias to catch you off guard and have some fun time with you. Didn't expect to impregnate you as a futa."
Akeno's eyes widened even further.
Akari smiled softly.
"Well… you bear my child now, Akeno."
Akeno stared at her for a long moment, processing everything. The shock slowly faded, replaced by a strange, warm acceptance. She had been claimed by Akari — in the most primal way possible. And despite everything, it felt… right.
"I… accept it," she whispered, a small, dazed smile forming on her lips. "Since it was you… as a futa."