What does a girl do at her grandfather's house - read books from his library? No, she wants to be entertained, not page-turning. Her hormones are running wild and they need an outlet. Well, since her grandfather has nothing better to offer, she'll do it herself. Or rather, his cock. And although the grandfather was surprised by her desire, but for his own granddaughter nothing is worth it! So it was a matter of honor to work her hole. So he had to work up a sweat. But she took his warm drink in her mouth with pleasure. Now it will be much more pleasant to see her grandfather. )))
I can see it's not the first time they've had sex together. It's so convenient - you don't have to take anyone off, there's always a shower and a bed nearby. Of course, her brother's dick is great, so any sister would fall for one and suck it at the first opportunity. Well, it seems to me, he doesn't mind having fun with his sister with it either - his own soulmate won't betray him or make him marry him. It was so cute when her brother came inside her - it just cheered them up. )