My stepsisters are sexy demons, and I must protect them

«Damn it! Damn it! Damn it!» Cassian punches the wall of his room furiously, so hard that his knuckles split open. The result he got during the exam was far below his expectations, and anger eats him alive from the inside. The awareness that he's still so far from Eiric's level torments him, filling him with frustration.

Lilvyra, lying naked on the bed, watches him with a calm, almost indifferent gaze, while in her mind she's already planning her next move. Her goal isn't just to help Cassian pass some academy tournament; she must make him strong enough to let him join the cult that all members of the Thalukvar family belong to. She could grant him a fragment of her power, and that alone would be enough to defeat Eiric, but that's not her aim.

«Is there really nothing you can do to make me stronger?! Then what's the point of you?!» Cassian snaps, turning to Lilvyra in anger and disappointment. His harsh, insolent tone doesn't please the girl at all.

Lilvyra's eyes glow with a sinister black light, and Cassian is lifted off the ground, slammed against the wall, crushed by an invisible force that keeps him from moving.

«Don't you ever dare talk to me like that again, foolish mortal,» Lilvyra hisses, her voice authoritative and merciless as she transforms into her demonic form. She floats closer to him, so near that he can feel her hot breath brushing his face. Her fingers tighten around his neck as the boy trembles. «Perhaps you still don't understand the hierarchy between us. If you think you're my master, you're terribly mistaken. You are nothing but a puppet in the hands of the Primordial Shadow, Nyratalir, and I am the one who acts according to his will until the day the seals that imprison him are broken!»

The terror Cassian feels at that moment is unbearable. Lately, he's begun to see Lilvyra almost as a friend, a companion, but those words bring him back to reality, reminding him of her true demonic nature.

She smiles sadistically, satisfied by the fear in Cassian's eyes. She moves even closer, pressing her naked body against his. «You've been a very bad boy, Cassian Thalukvar. I must punish you,» she whispers in his ear with a mischievous tone.

Lilvyra strips Cassian of his clothes, leaving him completely naked. Paralyzed by magic, he can only watch, his body trembling with fear. Lilvyra approaches him, brushing her warm, wet tongue along his neck while her long, black, razor-sharp nails gently caress his pubic area. Cassian braces himself for the usual bite on his neck, but it never comes. Instead, the kisses Lilvyra gives him are soft and gentle, sending uncontrollable shivers through his entire body.

Each kiss moves slowly, from his neck to his cheek, inch by inch, drawing closer to his lips. Completely entranced by the moment, Cassian slightly parts his mouth, ready to accept a passionate kiss. But just before their lips can meet, Lilvyra pulls away, leaving him breathless and trembling.

With slow, seductive movements, the demon kisses his slender chest, moving lower and lower. Immobilized, Cassian lowers his gaze, his heart hammering in his chest as he feels Lilvyra's lips getting closer to his throbbing erection.

«L-Lilvyra, what are you doing?» Cassian murmurs, confused and frightened, yet overwhelmed by growing arousal.

«You've disrespected the one to whom you owe everything. An offense that cannot go unpunished,» Lilvyra replies with a wicked smile. Without giving him time to respond, Cassian feels a wave of warm, wet pleasure envelop him. Even though he can't see clearly because of the large black wings blocking his view, he instantly understands what's happening: Lilvyra's tongue slides along his erection before she takes him completely into her mouth.

Cassian moans as his body is consumed by a pleasure he's never known before. Lilvyra's demonic tongue moves skillfully, stimulating every nerve of his glans with circular motions, coiling around him like a serpent. His breathing grows heavy, almost nonexistent, while every muscle in his body aches to move—to touch Lilvyra, to feel her curves—but the spell that binds him is relentless.

For the first time, Cassian doesn't feel only fear toward Lilvyra's demonic form. Her violet, voluptuous body, her black horns, and her majestic wings attract him in a perverse way. A dark desire takes hold of him, turning his unease into uncontrollable attraction.

«L-Lilvyra, I... I want you... I want to be with you forever! I... I love you!» Cassian cries out, his words driven by both physical ecstasy and a dark emotion that has little to do with real love.

«Say it again...» she whispers, her voice muffled as Cassian's length slides down her throat.

«I love you, Lilvyra! I want to touch you... I want to lick your breasts... I... I...» Cassian feels he's about to explode, the pleasure overwhelming him as release builds in her mouth. But right at that moment, Lilvyra suddenly stops.

The invisible grip that held Cassian shatters, and he collapses to his knees. Gasping, sweat drips down his forehead. His body still trembles, fists clenched, unable to contain the frustration and pain. In front of him, Lilvyra, now back in her human form, looks down at him, smugly satisfied.

«W-Why...?» Cassian whispers, his voice trembling and broken by agitation. His breathing is heavy as he looks up at Lilvyra, unable to grasp the reason for her cruel torment. His erection throbs painfully, a cruel mockery of his unsatisfied desire. His mind struggles to make sense of what just happened.

Lilvyra lets out a cruel laugh. «Do you understand now, Cassian? Your life belongs to me, just as your father's did, and all your ancestors before him. You are merely a puppet in the hands of a higher will that goes far beyond your limited human understanding. Don't you ever think I'm here because I care about you. Keep that in mind.»

Those words pierce Cassian's heart like poisoned arrows. He feels the weight of her declaration weighing heavily on him as tears begin to fill his eyes and stream down his face. Cassian remains on his knees, unable to move, while a storm of emotions rages within him. He feels affection, but also hatred and helplessness toward the being he's irreversibly bound to. He can't imagine his life without her and suffers at the thought that one day she will return to the pages of the Rithzargul. Yet at the same time, he hates her, feeling betrayed and used by someone who doesn't care about him at all—like a sick, senseless addiction.

Lilvyra approaches and leans down toward him.

«I've never seen a Thalukvar cry like this. Come on, stand up. We have much to do before the next phase of the exams,» she says, her voice suddenly soft, a striking contrast to her earlier cruelty.

That gentle, almost affectionate tone dissolves Cassian's resentment and anger, like a puppy soothed by a gentle touch after being struck.

«What can we even do in such a short time...?» Cassian asks, still shaken by the episode and the conflicting emotions swirling inside him. Fear, desire, and the twisted love he feels for that creature leave him lost and confused.

Lilvyra caresses his face with a soft touch. «Leave it to me.»