Soooooooo the empress of the sirins got beaten . . .and now they have a new leader . . .

A new quessn . . Sirin . . .the queen of sirins . . 

I mean . . with her looks she fits with them right? 

And if wanted for things to be fair . . .well how about Mei joins the ship girls and be her rival , or is you want to be sadestic just let Sirin destroy or own the world .