Dear goddesses of porn, please grant unto me, your humble petitioner, any female character and any male character not in an established relationship at the start of the story accidentally swapping bodies. Self exploration ensues, with attendant awkwardness and maybe guilty feelings. Partnered sex, during or after the swap also good. The messier and weirder the feelings, the better. Extra love for messy, weird awkwardness that resolves happily in the end.

My favorite character is Tina, and I love her paired with Graves or Newt, but I honestly would take anything het.