Ivy Yang and Aria Grey had been best friends since the day they had met on their first day of med school. Younger sisters to Cristina Yang and Meredith Grey the both had a relationship of those of sisters, they do everything together and that doesn't change when they start their residency in Mercy West Hospital. Do their sisters know that they work for a competing hospital? Do they even know they are in Seattle? Mark Sloan x Oc Jackson Avery x Oc Disclaimer: I do not own Greys anatomy the right to that go to the ABC studio. Thank you all.