One possibility is that Naruto discovers a new level of relaxation he didn't know before. He's always on the go as a ninja, so the massage might open his eyes to the importance of taking a break.
In a 'naruto gets captured' fanfiction, he might be tortured for information. His captors could be after the secrets of his Nine - Tails chakra. They may try to use him as a bargaining chip against Konoha.
Well, Naruto could gain the ability to use Kamui and use it for various things. Maybe he'd use it to surprise his enemies in battle, suddenly disappearing and reappearing in unexpected places. He could also use it to rescue comrades who are in dangerous situations that are hard to reach normally.
Imagine if the tanto was a gift from a mysterious stranger. This stranger could be an ally or an enemy in disguise. Naruto would be suspicious but also intrigued. As he tries to figure out the stranger's motives, he also has to deal with the tanto's unique abilities. Maybe the tanto can transform into different shapes, and Naruto has to learn how to control this transformation in the heat of battle.
In a Naruto fanfiction where he gets a massage, it could be a really interesting scenario. Maybe he's injured from a tough battle and the massage is part of his recovery. It could also be a way for him to relax after all the stress of being a ninja. This kind of fanfiction might explore his reaction to the gentle touch and care during the massage.
In a fanfiction where Ino gives Naruto a massage, perhaps Naruto will finally relax. He's always so tense from his missions and training. This massage could be a turning point in their relationship, leading to a deeper friendship. Maybe Naruto will start to open up more about his inner struggles to Ino, and Ino, in turn, will offer more emotional support.
He would probably face a lot of challenges at first. Since he's been neglected, he might not have the proper training to handle the Zanpakuto right away. But as he learns, he could start to gain respect from those who once neglected him. His new power would change the way people view him in the Naruto universe.
In this fanfiction, Naruto might have an interesting adventure with the Twi'lek. Maybe the Twi'lek has some unique abilities that can help Naruto in his quests. For example, the Twi'lek could be very good at stealth and help Naruto infiltrate an enemy base. Or perhaps the Twi'lek has knowledge of a rare form of jutsu that Naruto has never heard of and can teach him, expanding his skills as a ninja.
Well, Naruto might use the Keyblade to gain power and respect. He could start training with it and show those who neglected him what he's capable of.
Well, perhaps the new arm comes from some kind of ancient and mysterious source. It could be an arm that was once part of a powerful ninja from the past. This new arm could have a mind of its own, at first causing Naruto some trouble as he tries to control it, but eventually they work in harmony and it gives Naruto an edge in battles against tough enemies.
In this fanfiction, Naruto might gain some unique jutsu skills from Itachi. Itachi is extremely powerful, so he could teach Naruto advanced genjutsu or ways to better control his chakra. For example, Naruto might learn how to quickly break free from strong genjutsu attacks, which would be a great advantage in battles against tough opponents.