The fanfiction might focus on how opening his chakras changes Aang's relationship with his friends and his role as the Avatar. For example, it could make his connection with the spiritual world stronger, leading to new abilities that he has to learn to control. It could also explore how his friends react to this new, more powerful Aang.
Katara could be one of the main characters. She might play a role in helping Aang through the process of opening his chakras, either with her healing abilities or just by being there to support him emotionally.
In some fanfiction, Aang's tattoos might be depicted as glowing with a special power when he reaches a new level of understanding or connection to the Avatar state.
Well, in fanfiction, Aang's tattoos often play a big role. They can be a way to show his connection to the Air Nomad culture that was almost lost. It could also be a visual cue for his development as a more powerful and wise Avatar. Maybe in some fanfics, the way he gets his tattoos is different from the original story, which adds an interesting twist to his character arc.
In fanfiction, when Aang meets his grandchildren, it could be a very heartwarming moment. He might pass on his wisdom about airbending and the importance of balance in the world. Maybe he'll tell them stories of his adventures with his friends, like how they defeated the Fire Lord and brought peace to the four nations.
Another plotline could involve an enemy trying to stop Aang from getting his tattoos. They fear that once he has them, he'll become too powerful. So, they send various obstacles in his path, like attacking the place where he's getting the tattoos or trying to corrupt the tattoo artist.
Through his meditation in fanfiction, we can see Aang's character development in terms of his self - control. As he meditates more, he becomes better at controlling his emotions, especially when faced with difficult situations. For example, when dealing with the Fire Nation's aggression.
His friends' reactions would vary greatly. Shikamaru would be impressed but also concerned about the implications. He'd start thinking about the strategic advantages and disadvantages of Naruto having this power. Choji would be excited and would see Naruto as an even greater protector of the village. Ino would be a bit scared at first, seeing how Naruto's power seems almost uncontrollable when he first shows it. But as she realizes that Naruto has it under control, she would be more supportive. And Hinata would be the most supportive of all. She would be there for Naruto, believing in him no matter what, and would offer her gentle words of encouragement.
He could meet his future self. It would be an interesting encounter as he could learn from his future experiences and wisdom. Or he might meet people who have studied his past adventures and see himself through their eyes.