Index S3 is guaranteed before even this movie is announced. This is just to quell the dying fans waiting for it
then their is railgun S. I think they won't show Index S3 and Railgun S the same year
I still wish for the vol 20-21-22 as a movie. Even with limited time. I want to battles there to be epic. The animation used in Alisa's concert was awesome. JC did great on this one.