I listened to the song Little Butterfly by Ayumi Hamasaki and really got into it. Seriously, its addicting. Anyways, I thought of Lady No from SW because she always had butterflies by her, and I thought the song went well with the whole No/Nobunaga thing.
Image: googled it
Lyric: from Little Butterfly by Ayumi Hamasakirnrn
If you get the chance to, you should really listen to the song. I love it and hope you will like it too