{Occult Research Club — Night}
Koneko stood in front of Rias Gremory. She had just finished relaying everything she had seen about Ryusei, from her unusual strength to the strange gate she had disappeared into and reappeared from only minutes later.
Rias leaned back in her chair, her crimson hair cascading over her shoulders as she smiled knowingly.
"I knew she would be an interesting person."
Akeno, standing nearby, placed a hand on her cheek and giggled. "Ara~ another potential addition to the club? She's already caught your attention, huh, Rias?"
Rias didn't respond immediately. Instead, she turned toward the large window of the old school building, looking out at the moonlit courtyard. She had been searching for ways to gain the upper hand in her battle against Riser Phenex in the upcoming Rating Game, and now, fate might have delivered the perfect opportunity.
"I'll have Kiba collect her and Issei tomorrow during school," Rias finally said, her mind already forming a plan. "We need to see her strength up close."
Koneko simply nodded before taking her leave.
Rias' blue eyes glowed slightly in the dim light.
If Ryusei really was powerful, she might be the key to Rias' rebelling against her arranged marriage.
She turned from the window, a small smirk forming on her lips.
"Let's see just how special you are, Ryusei."
{Ryusei's Bedroom – Early Morning}
Ryusei groggily stirred awake, warmth spreading across her stomach as she felt a large hand rubbing slow circles against her skin. Something heavy and solid pressed against her back, making her shift uncomfortably in her sleep.
"Mmm~... stop..." she mumbled, her half-asleep brain struggling to process the strange sensation.
But when the weight against her back shifted and the hand pressed a little firmer, Ryusei's entire body stiffened.
Her eyes shot open, and as she slowly turned her head, she found herself face-to-face with Rika.
A monstrous, grotesque face stared back at her.
Rika's massive, muscular upper body loomed over the bed, her single eye blinking lazily as she continued to rub Ryusei's stomach like it was the most natural thing in the world.
"AAAAAHHHHHH!"
Ryusei screamed at the top of her lungs, flailing wildly as she tried to escape. She rolled too fast and crashed onto the floor, tangled in her blankets.
THUD.
Rika blinked, tilting her head curiously before leaning over the edge of the bed.
"Ryusei~?" Rika's distorted voice cooed, her tone full of affection despite her monstrous appearance. "Why are you screaming? It's morning snuggles time!"
Ryusei frantically untangled herself and scrambled backward, pointing a finger at the monstrous curse. "W-WHAT THE HELL, RIKA?! WHY WERE YOU IN MY BED?!"
Rika simply grinned, exposing even more of her sharp teeth. "You looked cold! And soft! And warm! So I thought, 'I should cuddle Ryusei!'"
Ryusei, still shaken, ran a hand through her messy white and black hair and groaned. "You can't just materialize in my bed and—AND RUB MY STOMACH LIKE THAT!"
Rika pouted. "But you made cute noises..."
Ryusei turned even redder. "THAT'S NOT THE POINT!"
Rika pouted, her tendrils wriggling slightly. "I was lonely... And you looked so soft."
Ryusei felt her soul leave her body for a moment as she processed the situation. Not only had she been unknowingly cuddled by a monstrous curse, but now Rika was giving her the ultimate guilt trip.
Taking a deep breath, Ryusei forced herself to calm down. "Okay, okay… Just, next time, ask before you crawl into my bed, alright?"
Rika's expression brightened instantly. "Does that mean I can sleep with you again?"
Ryusei immediately regretted her choice of words. "NO! That's not—!"
Before she could finish, Haruka knocked on the door.
"Ryusei? Are you awake?"
Ryusei froze. If her sister walked in and saw a gigantic monstrous curse chilling on her bed, there would be no explaining that.
"Shit—!"
"Want me to say good morning to your sister?"
"DO NOT."
Rika takes this chance to grab Ryusei by her thighs and picks her up.
"H-hey stop!"
Ryusei's face turns bright red when Rika pins her on the bed licks her face with her long tongue and squeezes her thighs.
Her breath hitches as Rika's long tongue licks her face, making her feel weak in the knees (or thighs, in this case). "R-Rika..." she whimpers, "You're gonna leave a mark..."
"Maybe I want to leave marks," she whispers.
Ryusei squirms beneath Rika's grasp, her face burning as she tries to push the monstrous curse away. "Rika come on, get off me!" she protests, her voice a mix of frustration and embarrassment.
Rika doesn't budge. Her long tendrils curl possessively around Ryusei's arms as her cycloptic eye narrows. "I don't like it," she mutters, her voice echoing with a strange mix of sadness and jealousy. "Those girls at school, that perverted one who kissed you—why do they get to be near you when I can't?"
Rika's grip tightens slightly. "You're mine, Ryusei."
"Your mine! Your mine! I love you! I love you so much!"
Ryusei shivered as Rika's long, rough tongue dragged across her cheek, leaving a warm, tingling sensation behind. "D-Damn it, Rika! Get off me!" she yelped, trying to push the curse away. But Rika's grip on her thighs tightened, her sharp nails lightly digging into Ryusei's skin as she pressed her face close, inhaling deeply.
"I don't want to let you go," Rika whispered, her voice trembling with raw emotion. She kissed the inside of Ryusei's thigh as best as her monstrous form would allow, sending an involuntary jolt through Ryusei's body.
A high-pitched moan escaped Ryusei's lips before she could stop it, making her entire face turn crimson. "S-Shit, Rika, people are gonna think I'm into some weird shit if anyone saw this…" she muttered, squirming under the curse's relentless affection.
Rika only held her tighter, her tendrils wrapping around Ryusei's waist as if to keep her bound forever. "I don't care what they think. You're mine, Ryusei. Forever."
"Mm...Rika..." Ryusei bites her lip to suppress a moan as Rika's lips move higher up her thigh. She spreads her legs wider subconsciously, making it easier for Rika to... "Wait, no..." She tenses up slightly, realizing where this might be going.
Rika's long tongue slips inside of Ryusei's panties. The female curses tongue flicks Ryusei's clit.
Ryusei's back arches off the bed as Rika's long tongue finally makes contact with her most sensitive spot. "R-rika you're supposed to be obeying me not... not licking me!" She tries to scold, but her voice comes out breathy and weak.
Rika just giggles darkly, the vibrations from her laughter sending shivers down Ryusei's spine. She continues to lick and flick her tongue against Ryusei's clit, her hands gripping Ryusei's thighs tightly. "Mmm... but you taste so good, Ryusei."
Ryusei's hands grip the sheets beneath her, knuckles turning white as she tries to hold back her moans. "S-stupid... cursed spirit... ahh...!" Her legs shake slightly, inner thighs quivering as Rika's skilled tongue brings her closer and closer to the edge.
"St-stop...I-i have school....!"
"Aww...no fun..."