Louis and Harry are parents and the other 3 boys (Zayn, Liam and Niall) are their adopted sons. this is the ageing that is going to be followed for the 'Kids'. Last name is 'Stylinson' Liam - 15 years (turns 16 mid book) Niall - 8 years Zayn - 3 years (yes he's a baby)
15 parts