As A Family (смешанная)

Suddenly, Harry spun around, leaving the pan of sizzling bacon on the hob, freezing in panic when he saw Remus and Sirius.
"Sirius! Professor!" he exclaimed, wiping his hands on his jeans and shaking his head, ruffling his hair and dislodging his glasses ever so slightly. "Sorry!"
"What are you apologising for, Harry?" Remus asked, seemingly stumping the kid. Harry's jaw dropped, and brows furrowed, as though hoping an answer would fall from thin air.
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It's the summer of 1994, and Remus and Sirius have taken Harry in to give him as much of a childhood as they can. Together, the three of them learn what it's like, after years of abuse, isolation and abandonment, to be a family.
[Part of a bigger series that doesn't need to be read in order. Post-POA.]