Worst possible case scenario, all the ship girls on base suffer from intense PTSD and are sent here as their end days.
This is the most likely scenario from what little I've read of this comic.
Yes, yes, I'm awakeHey Kongou, you still sleeping in there?... Did something happen?Oi oi, don't push yourself too hard, grandma Kon...Lets go for breakfast....my joints felt stiff in the morning, just thatIt's nothing.Okay, okay, I'm just joking!Haha, you're rightWho'd have thought that this war would go on for so many decades~Well, we all been kind of tired...