A Different Type of Bond (гет)

The year has been hell for Harry. Abandoned by everyone he cares for, Harry feels their is nothing to lose.
Daphne Greengrass is facing a fate worse than death.
One star-crossed night, Daphne saves Harry and finds a way to get out of the mess she is in. This has some negative impacts to Harry, but will things start to improve or will it get worse?
My take on twisted marriage bond and life debts. It will not be all roses. Dumble bashing. Competent Sirius. An angry Harry with some darker tendencies at times.