I've got a couple novels:
-The world was ravaged by climate change, people had to find ways to adapt
-Sci-fi formatted themes like: racism, xenophobia and sexism
-Literal and figurative opposites attract styled romance
-A fantasy world ravaged by a plague
-fantasy formatted themes like: death, illness, racism, homophobia, religion and similar themes
-Magic being used for all manners of applications as well as technology and similar things.
-A massive plot for revenge
-Dark themes like war, torture, death, the effects of a tyrant leadership, child soldiers, blackmailing, ect.
-There really is no "good" guy character, the main character is a villain, but there is no character that is a fault good, everyone has traits on both sides, there is no right or wrong for any character, everyone does what the believe needs to be done.
-A war torn romance
-Two princes of two different kingdoms at war find each other and fall in love quickly, the story follows the problems and trials the two face with being accepted and being able to handle the other kingdom's people and ideas because of how they're only ever seen as "the enemy prince".
-Expectations of people are not things that really should be taken seriously and or used, almost everyone defies the expectations that people have for them in some way, shape or form.