Sibling Rivarly

Two siblings are left at home as their parents depart on a lengthy business trip.

Sammy, the older sibling, is put in charge and makes her younger brother do the chores.

Bryce, the younger sibling, is tired of being told what to do by his sister and decides to get his revenge.

This story may contain some romance between siblings (don't know how I feel yet) so if you don't like that then you might not want to read this.