Wasteland

Hashirama and Madara, Obito and Kakashi. The main focus is Obito and Kakashi, and it's a survival story set in a wasteland.

Male pregnancy. Hashirama and Madara are the ones who have children (they have two, one of whom is Obito). Obito and Kakashi don't have kids, okay?

There may be other pairings, depending on how the story develops.

I'm trying to make this a mystery, but I have no idea what kind of thing I'll end up writing...

Theme: For a better future