The newest character can't be bred. You need to explore a bit to find them, and then intuit a solution to a small puzzle.
oh thank you for telling me
one last question how do i clear the dark aura
That's the puzzle. Think about which character, out of all of them, would have the ability to do so.
I haven't been able to find it; I already tried the one that sounded the most popular, the church girl, the lamia girl, but no luck.
I mean, you had it. The priestess is exactly who you need. Take them up to the statue with the aura and use the resulting button to clear it.
