Unforeseen Duty

After the war, Hermione decides to return to a repaired Hogwarts to complete her studies whilst Harry and Ron do auror training. Unknown to everyone, Lucius Malfoy rounds up remaining Death Eaters and puts revenge on Snape, binding his soul to Hermione's. As time passes, can they learn to handle their new life bound together? Warning: Contains rape/non-con but themes do get lighter