It should be a somewhat popular-style story about Lily, a sexually reborn King Arthur and a reincarnated Jeanne d'Arc.
Various FATE memes, sexual transformation memes, and various hero powders appear.
/
/
What if the civil war is about to begin with both sides tearing apart and destroying the world?
You need a King Arthur.
There's nothing a King Arthur can't solve, and if that doesn't work, then a teenage King Arthur.