Succubus Facade Shatters
Succubus or not, Dojin's cock and the banana filled her two holes at the same time, making Haruna tremble with extreme pleasure. "Ahhh! It's... it's too full!" she cried out, burying her face in the pillow. As Dojin's hot cock stuffed her ass completely and the condom-covered banana stimulated her pussy, her reason slipped further and further away. "Haaang~ Haang~ Haaaang~♥" The double pressure of them pressing against each other through the thin wall left Haruna barely able to breathe. "Succubus... because I'm a succubus... even this feels... good..." she murmured in a trembling voice. In truth, it hurt and felt awkward, but she had to keep up the act she'd been playing all this time.
Dojin began moving slowly in rhythm, and the banana plunged into her pussy along with him. "Succubus sis... you're amazing. Both holes are clenching so tight..." He marveled, pushing even deeper. Haruna was already racing toward what felt like her umpteenth climax. The moans that had started as acting had become real, and her body was genuinely reacting to the pleasure. "Again... it's happening again! My body's melting!" she screamed, her whole body shaking. As the final climax crashed over her, her mind went completely white. The intense pleasure pierced her brain, and she blacked out for a moment.
Dojin reached his peak too, pouring hot semen deep into her ass. "Uwaaa! It's hot... something hot inside..." It felt even hotter than a creampie. Like his cock buried deep was poking out her mouth. Haruna let out a final spasm, moaning. The two panted raggedly, leaning against each other. Their sweat-soaked bodies stuck together slickly, and the room reeked thickly of their fluids.
As Dojin's cock softened and slipped out of Haruna's ass, white semen trickled down her cheeks. "I'm satisfied with thy service!" Haruna plopped down onto Dojin's lower belly, fondling his cock nonstop. She couldn't let him think the succubus was a lightweight.

"I shall finish thee off with my hands and mouth!" Haruna grabbed Dojin's slippery cock, coated in her juices and semen, serviced him until he came again, and ended with her mouth. "Haa... haa... haa..." Dojin's exhausted panting. She felt his warm body heat against her back, but suddenly it was like cold water doused her—her mind snapped awake. What? What's this? What am I doing right now...? She didn't know how to end it. And her body still craved Dojin's cock. It desperately wanted a creampie. No... no, this was just acting... I really... Haruna's face went deathly pale.
She'd been lost in the pleasure, abandoning her human dignity. But the most shocking part was... the desire to feel that pleasure again, even though it started as acting. It was like her pussy had been molded to Hadojin's cock. Like a sheath perfectly fitted to its blade—her pussy was now custom-shaped for him. "Uh..." She let out a small moan and hurriedly sat up. Before she could make a sound, she wiped away the dot she'd dabbed next to her lip with saliva. She was 'Haruna' now, not 'Harona'.
"Do... Dojin, what the hell is this?" Dojin had to stifle a laugh watching Haruna's act. He realized she was switching back to normal Haruna mode. "Sis? Sis... you're back?" he asked cautiously. Hearing that, Haruna felt relieved. She realized Dojin truly believed she'd been possessed by a succubus. And how purely, sincerely he believed it. She suddenly grasped how wickedly she'd deceived her little brother. Guilt washed over her.
Haruna hurriedly covered her naked body with the blanket. Her face flushed crimson in an instant. Semen was still leaking from below, and both her ass and pussy throbbed painfully. The gravity of what she'd done hit her harder and harder. Tricking her brother, pretending to be a succubus, and doing that with him... Just thinking about it made her dizzy. How... how did this happen...?
But the bigger problem was what to do now. Telling the truth was too embarrassing and shameful; continuing the lie went against her conscience. Above all, the fact that she'd genuinely felt pleasure during the act confused her most. "Dojin..." she called in a trembling voice. She felt like she needed to explain, but didn't know where to start. Looking into Dojin's innocent eyes, Haruna's heart felt like it was tearing apart. I'm... I'm such a bad sister. She berated herself inwardly.
"Sis, so what happened to the succubus? Did it just vanish?" Dojin asked with pure curiosity. His question only deepened her guilt. He really believed some supernatural being had possessed her. And because of that belief, he wasn't holding her accountable at all. "I... I don't know," she mumbled evasively. "I just snapped to and here I was..." Her voice trembled even as she lied.
Dojin nodded at her answer. It was still mysterious and hard to understand to him, but he was just relieved his sister was back safe. "Oh! You don't remember anything?" "Yeah... nothing at all." "No pain anywhere? I was so worried about you, sis."
His innocent concern only amplified her guilt. "Ah... yeah. I'm fine," she lied. In truth, her lower half ached and burned, but she couldn't say that. Even now, semen was gushing from her ass and pussy, and she was clenching hard to hold it back. "But... why am I naked??" "Uh... you said you were hot and took them off while drunk..." Dojin swallowed hard, lying. That small consideration touched Haruna deeply. Ah... such a good little brother. Tears welled in her eyes.
She gathered her scattered clothes from the floor and dressed, trying to compose herself. Her hands shook hooking her bra, and putting on panties with fluids still leaking made her blush. From now on... I have to act normal. Like nothing happened. She vowed to herself. But every time her eyes met Dojin's, memories of moments ago made her heart pound. Especially recalling how lewdly she'd moaned, how aggressively she'd acted—she wanted to burrow into the ground. Masturbating with the banana, sucking Dojin's cock, taking it in her ass while moaning... It was all vivid.
Fully dressed, Haruna looked straight at Dojin. Her expression was back to her usual strict big-sister face. But inside, she was still confused and ashamed. "Dojin." Her voice was serious. "What happened today... it was really weird. But that wasn't me. Got it?" Her tone was firm, but guilt gnawed at her for lying. "Succubus or whatever, that was it, not me."
Dojin nodded at her words. Seeing his innocence stirred complex emotions in Haruna. "Yeah! I get it, sis." "You're not at fault at all. The succubus used you." Those words crushed her with guilt. Not at fault? I planned and acted out everything...? But relief came too. At least Dojin didn't resent her. He was worried for her.
"So from now on..." Haruna continued. "Nothing changes between us. I'm still your sister, you're still my brother. Let's just think of today as... a bad dream." Desperation laced her voice. She hoped everything could go back to normal. But feeling Dojin's traces still in her body, she knew it was impossible. The lingering soreness below constantly reminded her it wasn't a dream.
"Yeah, of course! But Harona didn't seem like such a bad succubus." "Don't talk about it." Haruna cut him off firmly. "Let's never mention that again. Seriously." Desperation filled her voice. If Dojin detailed what happened, she wasn't sure how she'd react—burst into ashamed tears or blurt out the truth in panic... "We just go back to normal. As sister and brother."
Even as she said it, she realized her hypocrisy. Was normal even possible now? Haruna got fully off the bed and headed for the door. Each step sent uncomfortable sensations from below, making her gait awkward, but she tried not to show it. "I... I'm going to my room to rest." She spoke without looking at Dojin. "And Dojin, this... never tell anyone. Got it?" She turned back. "Especially not Mom or Rina. If word gets out..." She couldn't finish. The thought was horrifying.
Dojin nodded. He had no intention of telling anyone either. "Yeah... you keep it secret too, sis. I mean, I'm not a virgin anymore..." His serious reply turned Haruna's face beet red. She almost said she wasn't a virgin either but held back. "Don't say stupid things."
Haruna felt a bit relieved hearing that. At least this wouldn't leak out. But the real issue was how to face Dojin from now on. As she walked to the door, she paused. Without turning, she felt his gaze on her back, making her skin tingle all over. Can we really... pretend nothing changed? She wondered. But she already knew the answer. Impossible. What happened today had changed their relationship forever. And the biggest problem... was that she'd done it all intentionally. Even if acting, she'd enjoyed it somewhere deep down.
"And Dojin..." Haruna gripped the doorknob and spoke one last time. "If... if that succubus... shows up again..." She hesitated. Truthfully, she feared succumbing to temptation again. Today's experience had been too intense, and part of her wanted that pleasure once more. "We have to make sure... it never happens again. Got it?" The words were a warning to herself too.
"Got it. If Harona shows up again, I'll tie her down." Haruna chuckled softly. On the other hand, she thought—if it happened again... could she really stop it? Today's experience had been too intense and memorable. "Goodnight, sis." "Goodnight, Dojin."

Haruna spoke last and opened the door. Stepping into the hallway, she let out a deep sigh. The short walk to her room had never felt so long. Each step reminded her of what just happened, especially feeling Dojin's semen still trickling out, making her face burn red.