In the world of fanfiction, the possibilities are endless. So, it's entirely possible that Naruto is one of the 10 Espada in a particular fanfic. Fanfic writers are known for their creativity in mixing and matching different elements from various shows and mangas. They could take Naruto's character and place him within the Espada hierarchy, perhaps giving him a new look, new powers, and new relationships within that framework. This can create a whole new story that both Naruto and Bleach fans might find interesting.
It could lead to some really interesting plot twists. Ichigo's powers and nature might interact with the Espada's dynamics in unexpected ways, creating a whole new story arc.
Another common theme is adaptation. When the Espada enter a new and different setting in these fanfictions, they have to adapt to new rules, cultures, or ways of life. It can be really interesting to see how they change or resist change. Like in a crossover where they enter a world with strict moral codes.
I'm not entirely sure specifically as it could be a very niche or fan - created concept. It might be a fanfiction where Naruto characters are somehow related to the Espada from Bleach. Maybe it involves Naruto characters taking on the powers or roles similar to the Espada in some alternate story.
It could be about the relationship between Ichigo and Rukia in the context related to the 9th Espada. Maybe it involves their adventures or interactions when dealing with the threat or situation associated with this Espada.
Well, it could be that Naruto somehow gets transported to the Bleach universe and is made into an Espada. He might use his ninja skills in combination with Espada powers to fight against other powerful enemies in the Bleach world.
"Just to Make Up the Number" was a fable about how Mr. Nanguo in the Warring States Period got into the band of King Xuan of Qi by pretending to play the yu in order to get paid and trust. King Xuan of Qi liked to listen to ensembles, so Mr. Nanguo could deceive him. However, after the death of King Xuan of Qi, his son, King Ni of Qi, liked to listen to solo music. In order not to be exposed, Mr. Nanguo had to escape. This story satirized those people who did not have real talent and mixed in with the family to make up for their mistakes. It emphasized that one should be realistic and not fake.
It was a derogatory idiom that originated from a fable in Han Feizi's Neichu Shuo Shang. Its literal meaning was that people who didn't know how to play the yu mixed in with the team to make up the numbers. This idiom was used to describe a person who had no real talent mixing in with the experts and passing off inferior goods as good ones. Making up the numbers could also express self-modesty. This idiom is often used to describe a person who has no ability or acts perfunctorily.