One way is to focus on the values of the world being inverted. For example, in the normal Naruto world, loyalty to the village is highly prized. In the upside - down world, loyalty to something else, like a group of outlaws or a different ideology, could be the norm. This would lead to different character motivations and actions.
To develop the 'Naruto World Upside Down' concept without adult content, you can play with the power dynamics. If the weak characters in the original are made strong and vice versa. Let's say Hinata is now one of the strongest ninja. This change would ripple through the story, affecting how battles are fought, who gets to make decisions, and how the overall plot progresses. It also gives a chance to explore the characters in new lights and develop their personalities in different ways. For example, a previously shy character like Hinata being powerful might make her more assertive and confident, which would be an interesting character arc to follow.
Another aspect to consider is the technology and jutsu in the Naruto world. In an upside - down version, new and strange jutsu could be developed. Maybe instead of the Rasengan being a high - level jutsu, it's something that every novice ninja can do, and there are other, more complex and unique jutsu that are now the focus. This can change the way ninja training is conducted and how battles are strategized. Also, the way the Hidden Villages interact with each other in terms of sharing or hiding jutsu knowledge could be completely different, creating a rich tapestry of new story possibilities.