Last Hearth's Warming Eve

Silver Wing and Dark Wing are planning a small reveal for their father, Night Wing, but their daughters end up finding out too soon.

It's been many years since that night together, and the family has grown. Both Silver and Dark have twin daughters of their own, Pewter and Steel, as well as Shadow and Black, and Night couldn't be any happier. But when one of the younger twins finds out the secret of their origins, things only go sexy from there.