Aside from the great kinks, especially the corset and the garters, what I really loved were the parts where Harry said "I Love You" and never really expected an answer because of how he was raised. Nevertheless at the end Severus gave him the very thoughtful gifts that he should have received, but most importantly his reply of loving him back made up for the years he lived with neglect. That and also how Arthur really steps up as a father figure to Harry and wishes for his happiness.