Ugly Little Things

John Smith, an emotionally constipated wanderer, never intended to be a father, but fate had other plans. First came Eric, Missy's little boy, a creature of brittle bones and furious eyes, then Victor and Daniel, a pair of hyperactive twins, casualties of a life lived carelessly.
Fourteen years later, this makeshift arrangement surprisingly still stands. John is heedless, Victor doesn't know who he is anymore, Danny hides his fury behind a childish smile. And Eric, now an eighteen-year-old with mischief in his veins, gives everyone around him the hardest time he possibly can. Until Rose Tyler, the new girl in school, joins the theatre club and manages to somehow temper his storm.
But when Donna's name is dragged through the dirt, Eric is torn between his pride and the deep connection he once had with the redhead.
Between the school play, a couple of unearthed secrets and late-night walks through Wothordoc, a forgotten corner in the South East of England, the last year of Secondary School proves to be quite the experience for the three brothers and their wild little group of friends...

Doctor Who - High School AU

John Smith is the Twelfth Doctor
Eric Smith is the Ninth Doctor
Daniel Smith is the Eleventh Doctor
Victor Smith is the Tenth Doctor

Available on AO3 as well at the link: https://archiveofourown.org/works/63460072/chapters/162604288