Chapter 4: Crystabel is actually jealous how filthy

I gently began to rub the head of my cock against her pussy hole, gradually sliding the full length along her slick entrance, and with how hard I already was I did not need to bend down that much to keep the contact steady.

’Yes yes yes put it in more please.’

Her moanful thoughts were getting louder and louder with every pass, and anyone in the house right now would actually think she was in some kind of trouble because of how hard she was actually trying to stifle the sounds leaking past her lips.

But I did not even care. I kept rubbing my throbbing cock across her swollen vulva and clitoris, the wet heat of her skin coating the underside of my shaft with every slow drag.

The ecstasy I was feeling was too much for me to actually stop now. I could feel the pressure building low in my stomach and knew I was going to cum very soon.

What a real waste. I had only just started teasing her and I was already about to finish. I mean I had not even gotten my cock into her pussy yet.

But what better way to cum than by rubbing my hot throbbing cock all over my step sister’s leaking pussy?

Thinking about that immediately made me edge hard. My cum splattered in hot trails all around her pussy, thick ropes landing across her swollen lips and dripping down toward the sheets.

Not sure any of it made it inside, but I did not care. I kept on rubbing my half-hard cock against her slippery wet pussy, the mix of my cum and her juices making every slide feel even better. Now that really felt so good.

As if on cue Lille immediately came after me, her juices gushing out and coating my cock in fresh warmth.

[Congratulations you have accomplished the perverted step son system starter mission the full system interface has now been unlocked]

Excitement immediately rushed through my body as I saw the system stats appear. Finally I could actually explore this new perverted world opened onto me. My cock immediately hardened once more as I tried circling the head against the inner wall of her pussy, pressing just enough to feel the soft resistance. Causing her to moan out loud.

But just before I could continue I heard a resounding knock on the door.

"Lille are you okay. Why are you sounding like that and where is Kelvin hope he is not there."

Crystabel stood at the door. Maybe she was done with her study. I was not really sure, but immediately I heard her voice adrenaline kicked in and I immediately moved away from Lille’s body. I immediately pulled my trousers back on while beckoning for Crystabel to hold on for a while.

’I didn’t even hear her come in from the front door. Or was she in the house right from the start. No that can’t be.’

Just as I was trying to think of what to do another knock resounded from the door, this time around more angrier than the last.

"Steve what are you doing in there is your sister okay open this door this instant."

Crystabel’s voice was even much more fierce. I immediately finished my slight cleaning and rushed to open the door with sweat pouring down my face. Meanwhile Lille immediately pulled the blanket over her body as soon as she heard the knocking.

As soon as I opened the door I saw Crystabel sweating heavily like she had gone hiking. The sweat stuck to her white t-shirt, outlining her boobs fully and making the fabric cling to the shape of her nipples. But this was no time to look.

"Emm I..."

Before I could even finish she pushed me aside and entered the room.

"What’s going on I have been knocking for almost three minutes now I heard your voice all the way from the living room what’s the problem," she said, giving me a disgusting look.

Lille only stretched slightly as though she had been sleeping. "Well I asked him to help me with my homework and ended up sleeping half way through so I do not know what happened," Lille said, her acting top notch, it was like she was telling the full truth.

"Then why was the door locked and why is this room smelling funny," Crystabel’s voice was slightly shaky as if she was pained.

’I just hate my sisters I hate medical school in general I am meant to be the first person to do such a thing with big brother now she’s the one. Medical school is just taking my life away just stepping in this room already makes me wet.’

Her inner thoughts were just like I remembered. She was always jealous.

"Don’t worry I think it’s because my windows were closed I promise there is nothing going on," Lille tried to explain, but before she could even finish Crystabel immediately sighted the panties poking out from the edge of the bed and reached for them. And as expected, as soon as she pulled them out they were all wet and slimy with Lille’s cum.

Crystabel’s demeanor changed almost immediately. From one of anger to another of confusion, jealousy and sadness intertwined.

’I am meant to be the one there not her.’

At this point I was sure Crystabel was obsessed with me. Her inner thoughts were always so intense. I have not even heard a really perverted one for the last week. Or maybe it is because she was always out busy.

"Alright open the windows," Crystabel said in a desolate tone as she left the room. From her voice one could feel the sadness and jealousy.

As soon as she left I immediately followed suit straight to my own room. At least I have completed the starter mission so my work was done, although I did want to fuck Lille so bad. I mean my cock was still freaking hard, probably still dripping with precum.

Once I got into my room I immediately opened my perverted step son system. And the interface blew me away. The screensaver of the system was my three sisters naked, nipples hard and fingers inside their juicy pussies. It was really so arousing, not really helping my condition. But I still just ignored my bulging cock and checked the system interface.

And to my surprise I had the personal data of all my step sisters plus their current boyfriends, love interests and even masturbating schedules. I was also able to see their mood at any current time so I could know when best to strike.

[Congratulations you have finally completed the starter mission and you have been rewarded with a skill and 300 perverted points]

[Skill: Perverted Thought Infusion - infuses one perverted thought into the target every 8 hours. Cooldown 6 hours]

[Points can be used to improve perverted skills, bind love interests through complete perversion of inner thoughts even if they don’t like you, although that would take quite a lot of points. And perverting inner thoughts is completely different from infusion of perverted thoughts. With time you would understand.]

After reading through the description I was impressed. Now perverting my step sisters was a no brainer. There were also many more features to the system like perverted missions, perverted store and lots more, but just before I could continue exploring a mission popped up on my screen.

[New perverted mission: Make your sister happy]

[Mission: Go into Crystabel’s room and apologize, when she forgives you, then ask her if she can keep a secret. Once she obliges tell her you have an erectile problem and that your cock gets hard really easily and hardly comes down and if she had a remedy you would love it ( your asking since she’s a medical student) .]

[Item to aid mission: Erectile elongation card - can increase stamina and keeps penis erect for a longer time.]