Add a lot of mystery. Don't reveal all the details of the deal right away. Let the readers wonder what exactly the devil is getting out of it and what the full implications of the deal are for the character. For example, if the deal is about getting revenge on someone, make the revenge seem simple at first but then show how it spirals out of control.
Gon could be a likely character. He is extremely determined and has a strong sense of justice. In a situation where he is faced with an impossible task, like saving a dear friend who is on the verge of death, he might be tempted to make a deal with a devil. Another one could be Hisoka. He is always seeking power and new thrills. A deal with a devil to gain some unique and powerful Nen ability would be something that might appeal to him. Killua is also a possibility. He has a dark past and has always been in a struggle between his good side and the assassin training he received. If he thought a deal with a devil could protect his friends or atone for his past sins, he might consider it.
It could be a new character created specifically for the fanfic. Maybe a powerful and malevolent spirit that has been lurking in the shadows of the Naruto world.
The devil could be a new, mysterious character created specifically for the fanfiction. It might be an ancient evil entity that has been lurking in the shadows of the Naruto world for ages.
In 'A Deal with the Devil' short story, it often involves a character making a pact with the devil for some desired outcome. Usually, the devil offers something tempting like wealth or power. However, there are always hidden costs and consequences. For example, the character might lose their soul in the end. This type of story is a classic moral tale, warning people about the dangers of greed and making unethical bargains.
The concept of 'deal with the devil' often involves a person making a pact with a devil or some malevolent supernatural being. In many tales, a desperate individual, usually seeking power, wealth, or knowledge, offers their soul in exchange. For example, in the legend of Faust, he made a deal with Mephistopheles. Faust was granted his desires for a time but ultimately faced a tragic end as the devil came to claim his soul. It's a cautionary theme about the high price of getting what you want through unethical means.
In the Devil Law, there was no specific transaction between the Devil and Duwei. The relationship between the Devil and Duwei was more like a relationship of mutual use. According to the demon law, the demons themselves had powerful abilities, but they also needed the resources and help provided by humans to unleash these abilities. Therefore, demons often traded with humans or cooperated with each other to obtain resources and increase their strength. For example, in the novel, the demons and Duwei had made some deals to fight against other demons and humans.
In 'A Deal with the Devil' short stories, the idea of a Faustian bargain is central. That means trading something of great value (like one's integrity or soul) for worldly desires. The devil is usually portrayed as a smooth - talking entity. Another common element is the build - up to the deal. There are often signs or warnings that the character ignores. And finally, the aftermath of the deal is shown in a very dramatic way, highlighting the horror of what the character has gotten themselves into.
One common element is the desperate or ambitious protagonist. They are usually in a situation where they feel they have no other option but to make a deal. Another is the devil's tempting offer, which seems too good to be true. And of course, there's always the price to be paid at the end, often something very dear like the soul.