Chapter Text
This is the story of how Y/N Potter and Regulus Black went from enemies to friends to lovers.
As the younger sister to James Fleamomt Potter Y/N Euphemia Potter was an odd girl to say the least. Having been a surprise to the Potter parents she was welcomed to the world with love, however despite this she was a premature baby with poor health for the first 6 years of her life. James became the over protective brother quite quickly as she was so small and fragile. As time went on Y/Ns health improved and nobody would have know just by how she looked and acted that she had be ill as a child. Of course once an overly protective brother always an over protective brother. James was never far from his sister if he could help it, that was until he left for Hogwarts when he was 11.
For the first time ever Y/N was alone without her brother to keep her company she found it extremely boring the only bit of excitement coming from James's weekly letters telling her all about Hogwarts and his new friends. Once he returned the two were once again as thick as thieves.
When Y/N finally started at Hogwarts James had keeped her close as he insured her integration into his friend group the Maraders becoming ther 5th and final member. As school went on all of them being in Griffindoor insured a close friendship with Y/N even bing allowed to sleep in the boy's dorm room ( courtesy of her nightmares).
However this year the boy's have their O.W.Ls to focus on and what happens when they over look her importance in the band...