«Hakuto... wake up, Hakuto... it's time,» Yuzu whispers softly.
«Y-Yuzu... what do you want now...?» he mumbles.
His voice sounds rough and annoyed. His eyes stay shut.
Hakuto is still half-asleep.
But he instantly feels something strange.
A heavy yet soft weight presses against his chest.
In an instant, he understands exactly what it is.
He opens his eyes wide.
Pale moonlight filters into the room, just enough to reveal Yuzu.
She's wearing her usual light lace lingerie, more transparent than it should be.
She's lying on top of him, chest to chest.
A mischievous smile, like a child about to pull a prank, lights up her face.
«W-What the hell are you doing...?» Hakuto whispers.
He grabs her arms and flips her to his left side.
Yuzu puts a finger to her lips.
She signals him to stay quiet.
«Don't you remember what we talked about this morning?» The plan to help you get more confident with Rika's body? It's time to put it into action!»
«I already told you, there's no way I'm not touching Rika. Especially not while she's asleep!»
«You're saying you don't want to help your sister control her powers? You're so selfish! If another pervert tries to attack her again, it'll be your fault!»
«You're seriously trying to guilt-trip me just because I don't want to grope my sister while she's sleeping? If she wakes up, she'll kill me for sure!»
«Oh, if that's your only problem — that you're afraid she'll wake up and catch you in the act — then you don't need to worry.»
At that moment, Yuzu's eyes glow red.
A faint crimson mist spreads across her skin.
«Yuzu... what are you planning to do...?!»
«Shut up and let me handle it!» Yuzu snaps.
Then, she stretches her arm toward Rika.
An ethereal blood-colored trail flows from Yuzu's fingertips.
It slips into her sleeping sister's ears, nose, and slightly parted lips.
«There we go!» Yuzu says with a satisfied smile.
«I demand an explanation before I punch you!» Hakuto snaps.
He still keeps his voice low.
«Calm down! I didn't do anything to her! I just used a vampiric spell to put her into a deep sleep. Right now, not even cannon fire could wake her.»
A second later, a soft, feminine moan fills the air.
It's incredibly sensual.
But it doesn't come from Yuzu.
Alarmed, Hakuto quickly turns to Rika.
For a moment, he mistakes it for a moan of pain.
She's lying on his right side at the far edge of the bed.
But it's not a moan of pain.
Hakuto lifts his torso slightly.
He can clearly see Rika's expression.
Her cheeks are flushed.
Her breathing is heavy and ragged, like she's running a marathon.
Her mouth is slightly open, and her tongue timidly pokes out past her lips.
«Yuzu... what did you do to her?!»
«I just told you — I put her into a deep sleep... a deep sleep where she'll dream about her most intense and hidden erotic fantasies. The ones she's too embarrassed to even admit to herself. It's to... how should I say... set the right mood,» she says with a mischievous, playful smile.
«But that... that's a succubus specialty! You said it yourself — her succubus power is stronger than yours. So how did your magic even work on her?»
«Oh, it's simple. My magic might be weaker than hers, but my mastery of succubus powers is way better. The mind is also more vulnerable during sleep. That made it possible. See? It's your fault for not even trying to help her gain full control over her powers!»
Rika's moans grow sharper and more intense.
Her body curls up tighter.
Her knees almost press against her breast.
«Oh, Hakuto... Rika's moans of pleasure... isn't it music to your ears?» Yuzu teases. «Since you're not planning to take advantage of the opportunity I created, I'll just do it myself. It'd be a shame to let such a chance go to waste, don't you think?»
«Y-Yuzu... you're really a pervert!»
«No, I'm a succubus,» she replies with an innocent smile.
Then Yuzu rolls over on top of Hakuto again and she eaches toward Rika's butt.
In that position, Yuzu's crotch presses against Hakuto's.
And...
«...it seems this situation is affecting you more than you're letting on...» Yuzu smirks.
She feels something big and hard pressing against her lower belly.
«Well, obviously...» Hakuto mutters, almost ashamed. «...but that doesn't mean I think this is okay!»
But Yuzu doesn't even listen.
She stretches her arm as far as she can.
She grabs the waistband of Rika's pajama pants and...
...pulls them down in one swift, sharp motion.
Rika's perfectly firm and round butt is revealed.
It's covered only by white panties, swallowed by her plump cheeks.
It's like Yuzu just pulled back the curtain on a work of art.
That heavenly sight, combined with Rika's intense and sensual moans, overwhelms Hakuto.
Only a superhuman effort of will keeps him from losing control of his hands.
But Yuzu shows no such restraint.
She immediately reaches out with both hands toward her sister's butt.
Her fingers sink into the soft flesh.
She starts massaging and squeezing harder and harder.
Rika's moans grow louder with every motion.
Hakuto gulps.
His face flushes with embarrassment.
But he still can't take his eyes off Rika's ass.
«Are you absolutely sure you don't want to join in too? Succubus powers lose their effectiveness if used too often on the same person. Next time, Rika might not be so... willing.»
«I-I told you I'm not interested...!»
But Hakuto's voice doesn't sound convincing at all.
~I can't! I can't! I can't! Hakuto, resist!~
Yuzu's smile grows even more wicked.
~He's breaking! He's breaking!~ she tells herself with satisfaction.
Then, as if to push him over the edge, Yuzu spreads Rika's butt cheeks.
Even in the dim light, the liquid dripping between her thighs is clearly visible to both of them.
Hakuto isn't an expert with girls.
But even a beginner like him knows what that liquid means.
Rika is extremely — overwhelmingly — aroused.
«See, my dear brother? Looks like our precious Rika is really enjoying her dream. I wonder who the lucky guy is? Maybe it's you.
And if that's the case... I'm sure reliving that same dream while awake will finally erase all those stupid beliefs she has about losing her virginity only to the love of her life!»
«I-I... I don't...» Hakuto stammers.
«Come on, Hakuto! This is your chance to have sex with Rika! Now or never! Go!»
«Y-Yuzu... stop it...!»
«Guess I'll give you a little push!»
Yuzu's hand leaves Rika's butt and rests on Hakuto's forehead.
In a fraction of a second — before he even realizes what's happening — she uses her succubus magic again.
This time, she uses it on him.
As if moved by a higher will, Hakuto's hand moves on its own.
He grabs Rika's butt and squeezes it hard.
«Oops...» Yuzu giggles.
She gets off Hakuto and rolls back to her side of the bed.
Rika's fingers instantly clamp around Hakuto's wrist.
She squeezes so hard he almost feels it snap.
«What the...?» Rika mutters sleepily.
She still grips Hakuto's wrist tightly.
Rika's eyes drop between her thighs.
Her pants are down.
A wet stain marks the sheet beneath her.
And Hakuto's hand is glued to her butt.
«R-Rika, I can explain!» Hakuto stammers. «It's not what you think! It was Yuzu who—»
He trembles with fear and shame.
Before he can finish the sentence, Rika jumps out of bed.
In the next instant, large black wings sprout from her back.
Her irises turn blood-red.
Her body is wrapped in a purple aura.
Her gaze, filled with murderous rage, locks onto Hakuto and Yuzu.
«I... I...» Rika mutters.
She stretches her arm toward them, her hand open.
A glowing orb of energy forms in her palm.
«Hakuto, Yuzu... I'll kill you!»