A Gryffindor from the Black family and a Slytherin from the Wennov family; a Slytherin from the Black family and a Gryffindor from the Wennov family. What matters to them? Loving each other is enough.
*Simply put, the older brother and sister get together, and the younger brother and sister get together. Both couples pair red with green and have contrasting personalities, just to satisfy my wicked sense of humor.
There are original characters and personal headcanons. No character is one hundred percent likable, and they're all growing over time.
The Black brothers deserve to be loved. The original story didn't choose to write it that way, so let's make it happen here.