The Forgive game is telling the tale of a woman and a man renewing their life together after previously breaking up twelve years ago. The woman then was only 18 and wanted out of the relationship while the man didn't take that very well.
You get to choose the kind of relationship you'll have with the woman, whose name is Emma. You can either be a romantic love interest or just choose her to be your sister or daughter and there’s no incest involved. It's all up to your choices.