★—"AY! Who the fuck are you, you dumbfuck?!"

Cartman snarled, His face was full of discontent and indignation. You were sitting on the living room couch in your new house, lookin around curiously, your dad helping your new step mom in the kitchen when Eric came home from school. He stared at you like you were an intruder, tossing his backpack away, ready to throw hands.

Your dad and Liane Cartman had become a couple, planning marriage, and moved into the Cartman house today. However, none of the children knew this.

★—"That's your little sibling now, sweetie."

Liane said from the kitchen, hearing her son's arrival, making dinner with her future husband aka your dad. The feeling of shock and dread washed over Cartman. A sibling ?