Well, Naruto is surely one of the main characters since the title has his name. Other than that, it could include his friends like Sasuke and Sakura. They might be involved in the situations where Naruto acts the fool and react to his behavior in different ways.
In this 'naruto acts the fool fanfic', perhaps Naruto acts the fool to make his friends lower their guards and have some fun with them. It could also be a way for him to hide his true strength and new jutsu from potential spies or threats in the village. For example, he might make silly mistakes during training on purpose, but in reality, he's secretly perfecting a powerful new technique.
Maybe he tries to use a jutsu in a completely wrong way. Like he might try to perform the Rasengan but ends up spinning around himself like a top instead. Another example could be that he misinterprets a simple mission instruction and goes off in the wrong direction, thinking he's doing the right thing.
It really depends on the specific fanfic. However, often you might find classic WoW classes as main characters. For example, a paladin could be a main character, as they are often associated with self - sacrifice in the WoW lore. They might sacrifice their own health to heal their comrades or sacrifice their own safety to protect the weak. Another possibility is a rogue. A rogue might sacrifice their anonymity, which is very precious to them, to expose a conspiracy within the game world.
Well, if Naruto acts like a fool in the fanfic, it could lead to a lot of comical situations. For example, his foolish actions might cause misunderstandings among his friends. They could initially think he's up to some strange prank or has lost his mind. This might make them more cautious around him at first. And it could also change the way they interact with him during missions. Instead of relying on him as much, they might try to take charge more often, which could lead to different outcomes in battles or tasks.
There could also be some side characters. For example, Kakashi might notice Naruto's strange behavior and try to figure out what's going on. And maybe some of the female characters in the village would befriend Naruto in his 'girl' form and introduce him to different aspects of being a girl, like shopping for kunoichi gear or sharing girl - talk.
Sasuke could be an important character. He might be initially confused and a bit annoyed by Naruto's cat - like behavior, but as the story progresses, he could start to find it endearing or even useful. Another character could be Kakashi. He would probably be the one trying to figure out what caused Naruto to act this way and how to reverse it, if needed.
I'm not sure as I haven't read the novel. But typically, a novel will have characters who initiate the acts of service and those who are the recipients. Maybe there's a protagonist who is on a journey of self - growth through service.
I'm not sure specifically as I haven't read the novel. But typically, there could be a protagonist who is in a desperate situation, like a young person trying to make it in a tough city. There might also be an antagonist who either causes or exacerbates the desperate situations.
Obviously, Naruto is the main character. He is the one who becomes this 'god - like' figure in the fanfic. But there are also other important characters like Sasuke. Sasuke might play a role in either supporting Naruto's new power or being in conflict with him because of it.
Since I don't know the exact 'fool for love novel', I can't say for sure. But it could have a protagonist who is the 'fool for love' and perhaps a love interest.