The Characters can be at anytime in their enlistment, but what the public and most newbies don't know is that many independent Magical Soldiers die in their first year since the most famous of these soldiers are the experts or a strong group.

People can interact either during missions or their off time if they trust the person enough, as many Magical Soldiers have a secret identity mainly so they don't have to deal with fans and the paparazzi since being a magical soldier is pretty much a celebrity in this world and many of the older soldiers have fandoms.

The powers are dependant on the wish and anything they can think of. Like let's say a little girl wished to healed of an illness, she would have the power to heal herself and others, also this girl is creative so she has unique weapons for instance she has a bow that can shoot lasers and that is very sharp so when it's used up close it can cut though buildings without a problem. Mainly the reason kids are chosen to be soldiers is because they are creative no matter how impractical it seems to adults. If you want a basic idea of limitation is that they can't be game breaking, like control all of time and space or to be immortal, I ask that the powers be as out there as possible and also that it isn't game breaking.

For the most part the missions are up to the Magical Soldiers, but sometimes big events will cause the Wish Granters will tell the Soldiers what to do.

The main Plotline is to get into the Shadow Hive and destroy it from the inside, but the recent influx of Unknown shadows is making that difficult, so to get to the hive are unique locations called Shadow ports which unknown shadows will pop out of and you can go though, but only some of them are open at a time.
I hope this answer the main questions if anything please ask~