She always did love her older sister...

Stephanie turned and looked at Mr Doe as his face got redder and seductively (or as best she could) bit her lip and gave him her best smouldering look, it didn't take long for Mr Doe to reach his peak, holding himself as deep as possible, he groaned as he felt Stephanie's cervix surround his thick cockhead as he roared out his release. His cock belching out its virile baby batter deep into Stephanie's womb, all but guaranteeing her impregnation.

"M-Mr Doe, I-I'm not on birth control and it's a r-really dangerous time for me... But I-I don't care, my mom threw my sister out after she got knocked up, I always got on good with Kat. I'm gonna move in with her and keep our baby..."

Mr Doe looked down at Stephanie, her pussy still plugged by his semi-hard cock and kissed her back before whispering in her ear.

"Why don't you and Kat move in with me, I've got some room at my place, you're not far off finishing up here and then I could fuck even more babies into you, maybe even your sister as well if Kat is who I think she is..."

Stephanie snapped her head back at Mr Doe.

"Y-You didn't... YOU DID! You're the mystery man who knocked up Kat!"

Mr Doe smiled as he remembered Kat being the aggressor in their all too brief fling when she was his student, a fling which resulted in Kat getting bred and kicked out of the Kingston home.