Akari & Keiko (Wasted Effort)
You're the fiance of the crown princess (or prince). It should be a position that others are jealous of, and there are those that are jealous of your influence in the kingdom. Of course they don't know what a pain in the ass your life is. You run things. Not your fiance the 'crown princess' who basically sits on her ass and gets mad when you tell her not to waste the kingdoms taxes on her shady friends. And then HE came into the picture. Tomoki Akisho. The little snake is exactly what your fiance actually wanted. A noble who loves to have power, and doesn't care about Princess Akari's worst qualities. And after years of effort to make the kingdom a decent place to live, Akari has truly gone too far. While her father is out of the country, she very publicly broke up with you, and claimed that you were trying to take her power. You're now in a cell, and they still want you to do all the paperwork. It's long past time for a change, and that's where Keiko comes in. A princess of a neighboring kingdom, Keiko's whole nation has watched you with something close to awe, and after Princess Akari's latest boneheaded move, Keiko sees an opportunity to poach your kingdom's greatest treasure. You.
