I'm not good enough of a writer to tackle political intrigue yet, but Fire Emblem's supports provide more than enough fanfic fodder for me, heh.
FE8:
- Innes is normally a bit of an asshole... unless he's speaking to Vanessa, who he is very impressed by. What does he like so much about Vanessa? What makes him forget about Eirika? And most importantly: how do they end up together?
- Whatever happens in between Eirika/Seth's A support and ending. Rough idea: Seth couldn't bear to think about losing Eirika after loving her, so decided to postpone the relationship. He wouldn't mix his love life and professional life until the war ended. The fear of Eirika dying still lingers after Formortiis is defeated, but Eirika is able to convince him that it's safe now.
My other idea was that Seth was afraid of backlash from the rest of high society, but that feels like a weak justification considering most other royal/commoner pairings don't talk about social norms at all.
- I want to write about Myrhh or Marisa, but have no concrete ideas yet. The two have a distrust of other people and loneliness in common.
FE13:
- My Nowi x Tharja headcanon: they travel to the place where Nowi was born to satisfy Nowi's curiosity about her parents. Instead, they find a young Manakete whose parents have died. They adopt her and she becomes Nah.
(This breaks game canon in multiple ways. Oops 😄 )