While Rain's fingers were enjoying the inviting warmth of her tight pussy, a soft voice came out of Liana's mouth.
"She doesn't need to know that, because this is my side... only for you."
The intonation with which she said it made his beastly appetite soar. With a flame shooting up from within him, he asked.
"Shall we continue where we left off?"
Liana didn't answer and looked at his throbbing cock before she shifted her gaze to the door with a strange emotion, as if to say 'our sister is waiting there'.
Indeed, if one listened closely, one could hear monotonous footsteps outside the door.
But Rain didn't pay much attention to it.
"I'm not satisfied yet. You're not going to leave me like this, are you?"
Feigning reproach, he glanced at her, but soon returned to his sly grin.
"Especially since you seem to want more too..."
Rain removed a couple of his fingers from her pussy, making her tremble, and showed her copiously wet hand.
His deep voice and the lewd sight of her sticky juices webbing between his fingers electrified every cell in her body, unleashing sweet anticipation.
But contrary to her expectations, there was no further action from him.
Rain only pulled away from her and sat down in a comfortable brown chair that apparently belonged to a local teacher. Then, after another glance at her disheveled shirt and the juices running down her legs, he said with an unchanging smile.
"Do it yourself this time."
Liana froze, noticing his proudly erect cock, which seemed even larger in this position. But after a few seconds, she obediently approached him and carefully climbed onto his lap so that her breasts with their aroused nipples were in front of his face.
Excitement danced on the tips of her nerves as she prepared to ride this monster.
Guiding it with her hand, she brought it up to her tender labia and slowly inserted the tip.
Immediately covering her mouth with her hand to hold back the moan that escaped, she slowly moved her hips, causing her pussy to engulf even more of his length.
"Mhhhhhmmm, so good~"
Sweet pleasure ran through her body every time she moved.
Rain was amused to watch the change in her horny face and her attempts to hold back her moans as her hips moved up and down, sliding over his cock.
"Your pussy is squeezing me even harder than usual. Does it really turn you on that your twin sister is right outside the door?"
Instead of answering, her moist walls only clenched tighter around his cock.
"Forget about her. All you have to care about right now is how to squeeze your pussy tight and how to be quiet."
And before Liana could think about it again, Rain simply covered her mouth with his, muffling all moans.
Her toes clenched each time his cock went all the way into her pussy, and the sweet taste of her saliva whetted him even more.
Squeezing the tender flesh of her hips even harder, he sped up his movements, mercilessly bringing her to her goal.
Her legs trembled and she let out a long moan that would have definitely attracted her sister had it not been for his mouth covering hers.
'Fuck!'
Rain growled to himself, pulling her body against his as he released several loads of semen deep into her womb.
As they rested together from their post-orgasmic high, his cock was still inside her, making her insides throb weakly, and he still pressed her fragile body against his.
When her breathing finally stabilized, Rain loosened his grip slightly and turned to her.
"Actually, I want to try something else."
Her body visibly shuddered at his words.
"B-brother, not again, I'm already tired!"
"I wasn't talking about sex."
Liana gave a puzzled expression, as if she didn't understand at all what he meant.
That made Rain look at her reproachfully.
"Do you think your brother is a lustful monster who only thinks about sex?"
"Yes?"
Her direct, honest answer made the corners of his mouth twitch a couple times. There wasn't a lie in her eyes, and she seemed to really believe it.
'Who does she think I am?'
"Otherwise, why do you need so many women around you?"
...But it wasn't an argument he could deny, so he left it alone, just adding more precision to the situation.
"We have a deeper connection than just sex."
Still not fully believing, Liana asked cautiously.
"So what did you mean by trying something else?"