Basic Premise for now.
I figured a pair of twins are separated at 5 years old, only having a few, faded memories of eachother. 10 years later, they are reunited and given the opportunity to be living together again. Taking this chance, the two have to learn to bond and get used to eachother, and to the changes in how people around treat the two, after being so used to just one of the twins.
For anyone who hasn't heard a Somerset accent, please listen to this if my character is stated to orginate from there.
Big Sisters: Kyrisse and Flonne.