Already set yourself up with a dull as ditchwater, platitude-spouting, male lead who drearily moralises about how robbing sunken u-boats is disrespectful to dead Nazis, and still the show manages to be hard-edged, intelligent and by and mature?
No worries, just add a fucking kid.
No one has ever found a child annoying. Their pure-hearted sincerity, innocent courage and untainted belief in simple matters of right and wrong are a beacon of inspiration to us all.
More than anything, children anchor the moral compass of a show while providing lovable light relief from all the violence and moral ambiguity. Just think how much better Ghost in the Shell would have been if Section 9 had had a cute kid tagging along with them in all their missions. Miles better, right?
After all, young children are so terribly under-represented in animation, so it's really nice to see them being catered for. To fail to insert a shrieking, wailing, selfish, self-righteous fucking kid into every anime, including retroactively adding them to any that have already slipped through the net, would be like the worst crimes of the Nazis by a multiple of a million, and should be enforced by law. Obviously.