PIP/Shunned/Escalating quickly
Well, it's a little too late to worry about it now, but she's right. She's probably going to get into a whole heap of trouble with mom if she turns up pregnant. But, I had already filled her with my spunk once earlier. Pulling out now was not going to fix anything.
I was definitely ashamed at how I had probably gotten my little sister into such deep shit, but my shame was not quite enough to override how horny I was at the time. I wound up slowly humping her while wrestling with myself in a huge inner struggle. On one side, there was shame and self loathing telling me I had done a horrible thing and was still doing a horrible thing. This end was also telling me I ought to stop and pull out, but that last part was pretty weak. It was easily overshadowed by the other side which kept saying how I already did it with her once and if she's going to get pregnant then she's already pregnant. And, besides that, I also had the guilty desire to actually see my little sister's belly swelling up with my baby inside her even if I did just hear her saying how she didn't want to get pregnant. Well, actually, she didn't exactly say she didn't want to get pregnant. All she said was she didn't want mom to be angry at her for getting pregnant. Maybe I could find a way to make it so she won't get in as much trouble even if she IS pregnant?
That thought immediately took over my mind as I continued to lightly rock my hips, plunging my dick in and out of my little sister. I began to form a plan, or at least what fragments of a plan I could think up while enjoying the third time I'd ever had my penis inside a girl's vagina in the space of just barely under an hour. It was only fragments, but it was enough to be pretty hot. I had already come up with the thought that would form the base of it. That is, "what if she's not the only one to get pregnant?" As soon as I'd had that thought, my subconscious mind immediately filled in the part where the other girls that I would be getting pregnant would have to be around the same age as Hannah, and that thought alone was enough to set me over the edge as I began filling my little sister's womb with it's second helping of her brother's incestuous semen.
I collapsed on top of her and, now that I'd gotten that load out, I was able to more consciously fit the pieces of my plan together. It was pretty simple, I'd just be heading to school with her tomorrow and then I would knock up all the girls in her class. It had somehow escalated from boinking my little sister using my powers to secretly shove my dick into every single pussy in a class of 7th graders and then repeat that until they were all pregnant. The idea was so incredibly hot I could feel my penis stiffening inside my sister's pussy once again. It had never even reached a half-chub in the first place, and here it was already completely stiff once again after I had just cum.