The plot might involve the candy shop owner competing in a local fair or competition to prove that their candies are the best. They might face challenges from other shops or even some ninja who think they can make better 'ninja - candies'. Along the way, they make new friends among the villagers, and also attract the attention of some important ninja who see potential in their unique candies for use in missions.
Naruto would definitely be one of the main customers. He has a well - known love for candies. His friends like Sasuke and Sakura might also stop by sometimes. Then there are the younger ninja trainees who are always looking for a sweet treat after a hard day of training.
One idea could be that the shop owner has a secret past as a powerful ninja who retired due to an injury. He now uses his knowledge of ninja tools and techniques to run a shop that attracts all kinds of customers. For example, he might have a special section in his shop for rare and ancient ninja weapons that are sought after by collectors and current ninjas alike.
There are fanfictions where the shop owner is an outsider to the main Naruto world but has a special ability to sense the chakra of the items in his shop. He uses this to find and sell only the best quality ninja equipment. One day, Naruto himself comes to the shop looking for a special weapon. The shop owner, recognizing Naruto's potential, gives him a discounted price on a powerful kunai that has a special history and was once used by a great ninja. This kunai then plays an important role in Naruto's next big battle.
In fanfiction, a Naruto shop owner can be unique because of the items they sell. They might have access to rare and ancient ninja artifacts that no one else has. For instance, a shop owner could sell a sword that was used by one of the Legendary Sannin. This would attract all kinds of customers, from powerful ninjas to collectors.
In a 'naruto runs a shop' fanfiction, he could run a pet shop. Naruto has always had a connection with animals. He rescues and rehabilitates injured animals and then finds them new homes through his shop. He might also have some special ninja - animal hybrids in his shop that are a big draw for customers.
One possible plot could be that a new and mysterious ingredient is discovered in the Naruto world. This ingredient is added to the ramen in the shop, and it gives those who eat it special powers. Naruto and his friends then have to protect the ingredient from villains who want to use it for evil.
It could be an old veteran ninja who, after years of service, decided to open a shop. He has a gruff exterior but a heart of gold. He uses his war stories to attract customers, especially the young ninja trainees who are eager to hear tales from the front lines while they browse his selection of kunai and shuriken.
The brothel owner could be a non - human entity, like a spirit or a transformed animal in disguise. He runs the brothel as a way to understand human emotions and behaviors better. In the course of the fanfiction, he meets Naruto, who is so full of positive energy. This encounter makes him question his own motives and existence. He then decides to use his resources (the brothel and its associated information network) to help Naruto in his quest to become Hokage, for example, by providing valuable information about the political undercurrents in the village.
It could be about a sweet and innocent love story. Maybe the two main characters meet in a candy store and fall in love at first sight.
One possible plot could be that Harry discovers he has some ancient claim to Gringotts. He then has to deal with the goblin politics and power struggles within the bank. Maybe he tries to reform some of the old and unfair practices at Gringotts.