She's untouched, for now

Jake watches as his gorgeous red head sister Mackie makes her way down the stairs, descending upon them with all her basking beauty. She walks over to the table smiling a perfect smile, she really was reminiscent of an angel.

"Hey Jakey! you seem to like what you see today, maybe this will make your morning a bit more exciting for you" She says cheerfully as she pulls her shirt up and flashes her glorious, soft tits at you, as you'd made such a normal action within the household.

"Oh wow, thanks Mackie! I wouldn't want to start my day any other way!" Jake says almost coughing on his food

She giggles and sits down, unaware of what changes you're coming up with for her, the only barrier is choosing one to start with.