SHe really is an angel

So, will Graf class change into an airship?

So is Graf using her cruiser guns so kill herself?

GRAF: "She has wings. I don't have wings. She's above me. She is my koai, but she's above me. I have no reasons to live..."^^
or more simplier, Aquila's wings are like Eruru's tail^^

Graf don't be surprised if an eagle suddenly decides to perch on you one day~