The other black (J. Potter love story)

Everyone knows James Potter for either his talent on the Quidditch pitch, his undying love for Lilly Evans, or his involvement as a leader of the infamous group that terrorizes the castle every day. Everybody loves and adores James to no end. They all either want to be his friend or have him as their lover.
On the other hand, Lyra Black is the twin sister of Sirius Black. Everybody knows her because she is top student of their year and has a reputation of being a bad girl. Nobody will dare cross her cause they all fear her.
Lyra sits on the path of darkness, but what if someone tries to change that after one fatal night throws the two into a fury of love, hate, heartbreak, and trust.