Awesome, glad you liked it!
You are forced to pick the boy, but the battle will have different outcomes depending on what move you use (it will be significantly easier or harder). You will get new dialogue from Despra if you make it to the end a second time, and you get new dialogue from the singers if you try to restart the game from the home screen. And yes, they are the other elements, good eye!
I could make art for Despra, but then it would be official art, it's better if fans do it pleeeeeaaassse T-T
(click the knife on the home screen for a little easter egg...)