What age group would that be? I could also use some writing help in my creative endeavors, and this jam would be more than enough to also move things forward with an idea that I had a long time ago. At one time, I was considering a JRPG-style project centered around destined heroes affected by the great spectrum (meaning that they also deal with whatever the world they live on considers to be the equivalent of being autistic) which is a concept that I think would be perfect for this jam.
EDIT: Just checked the rules, and that genre may be out of the question for me due to the amount of time I have spent working on concepts thereof. (However, I do have a variation on the concept in mind that could be done as an action platforming project.) Also, they go by the age of the oldest member of the team so I would end up pushing you into the 25+ group.