Thank you for this thread. This is my hybrid-fantasy/romance/action light-novel, Marry X Princess.
What if saving a life…ruined yours?
Shinsuke Watanabe is an ordinary teenager who just wants to live a quiet life. However, his world is changed forever when he rescues princess Cynthia Rose von Eisenhardt from a freak accident. Now, because of an antiquated clause, the pair find themselves engaged to be wed against their wills. If Shinsuke wants to get out of the contract, he must fight and defeat all the princess’ other candidates for marriage, all the while attending school, enduring unwanted infamy, and conflicting affections from every corner.