I think Hisoka could also be involved in tickle revenge in some strange and twisted fanfictions. Hisoka has his own unique sense of 'fun' and if someone were to tickle him as a way to mock or play with him, he would surely retaliate in a very Hisoka - like way. Also, Illumi might be involved if it's related to his brother Killua. If someone were to tickle Killua in a way that Illumi thought was inappropriate or dangerous, he might plan a tickle revenge on behalf of his brother.
One common plot could be a character getting tickled as a prank and then planning an elaborate revenge tickle. For example, Gon might be tickled by Killua as a joke. In revenge, Gon could plan to tickle Killua when he least expects it, like when he's sleeping. Another plot could involve a group of characters teaming up for a tickle revenge. Maybe Kurapika and Leorio join Gon in getting back at Killua for his tickle antics.
Gon would be a likely focus. His determination and simple - minded yet strong - willed nature could lead to some interesting time - travel related stories. He might be on a quest to save someone in the past or prevent a future disaster.
Hisoka is extremely popular in fanfiction. His unpredictable and somewhat insane nature makes for great plot - driving elements. Fanfictions might explore his motives more deeply or put him in situations where he has to interact with the main characters in unexpected ways. Additionally, characters like Illumi also gain popularity as his complex relationship with Killua can be explored in many different and fascinating ways in fan - created stories.
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.
Gon is a popular choice. He has a strong sense of justice and determination. Reborn as Gon, one could explore his journey again but with a different approach, like using knowledge from a previous life to avoid some of the hardships he faced. His connection to nen and his growth throughout the series make him an appealing character to be reborn as.
Some fanfictions also pair Kurapika with Kagome. Kurapika's elegance and his quest for revenge can be a great backdrop to a relationship with Kagome. She could potentially help him find a more peaceful path with her empathetic nature, and their story could be full of emotional depth and exploration of different values in their respective worlds.
Another well - liked original character is a young prodigy who has an extremely powerful offensive nen ability but struggles with controlling it. His journey to master his power while also dealing with the pressures of being a Hunter is a common and engaging storyline in many fanfictions.
Kallen could also be involved. She has a strong and fiery personality. A tickle fanfic could explore a more vulnerable and fun - loving side of her. Maybe her friends try to tickle her to get her to relax after a tough battle.
Kurapika could also be a likely character. Given his intense and often self - sacrificing nature in his pursuit of revenge, his friends would want to take care of him. Leorio, in particular, would be the one to bring him breakfast in bed. It could be a moment of respite for Kurapika from his heavy burdens, and a chance for some heart - to - heart conversation with his friend.
Gon is definitely one of the most popular. His journey of self - discovery and his pure - hearted nature make him a great character to base stories around. Killua is also very popular. His complex family background and his assassin skills give a lot of room for creative storytelling. His friendship with Gon is also a big draw for fanfiction writers. Another popular character is Hisoka. His mysterious and somewhat creepy personality, along with his powerful nen abilities, make him an interesting character to write about. Writers can explore his motives and his relationship with other characters in different scenarios.