Well, I'm curious to see how this game actually plays. But in terms of formatting, you gotta clear up some of that dialogue. Every new line of dialogue, spoken by a different person, starts its own paragraph. I.E:

"Emma! Why exactly did you have to volunteer me like that?" I inquired nervously, nearly shouting.
(New Paragraph)
"Oh! Sorry, Kyo-chan..."

Other than that, your writing is done fairly well and you've established your major players. I shall keep tabs on this story.