It's a tie

Trix and Conk kept ramming their sisters while holding back their climaxes. They were really wanting to win. Their sisters already came three times at this point but really wanted their brother's seed. It was a long breeding session as the boys were drooling and looked like they would pass out before they finished.

Then all of a sudden, both of them gave out and grunted hard as they came at the same time. The girls moaned hard as they finally felt their brother's seed fill their wombs. They felt bred already with how large the loads were as their bellies started bulging out.

Kazex was proud of his kids as they bred in front of him. He was jerking off his dick while watching. "Well done, kids. Don't waste a drop of seed. I wanna see babies popping out of those pussies by the end of the week."

Both boys then passed out on their sisters. The girls just giggled as it was adorable how they were trying to defeat each other when they really tied. Of course to their minds they all win.