Gon would probably be angry at first. He has a strong sense of justice and being kidnapped against his will would surely make him mad. He'd try to fight back immediately if he had the chance.
In some fanfictions, Gon might initially be shocked. He has seen Hisoka as a somewhat eccentric but strong ally. When he discovers Hisoka's more sinister side, like his love for fighting to the death and his disregard for normal moral boundaries in battle, Gon could be conflicted. He might feel a sense of betrayal because he thought Hisoka was more on the side of 'good' in their adventures. However, Gon's own sense of justice and his unwavering belief in his friends could lead him to confront Hisoka about his true nature.
It could also be part of Hisoka's game - playing with Gon's friends and allies. By kidnapping Gon, he can draw out others like Killua. Hisoka enjoys creating chaos and seeing how people react. This would be his way of setting up a more interesting and dangerous situation.
One common theme is the exploration of an unusual relationship. Given Hisoka's eccentric nature and Gon's pure - heartedness, their relationship can be very complex in fanfics, often blurring the lines between friendship, rivalry, and something more.
Many 'gon x hisoka fanfic' also have the theme of redemption. Hisoka is a rather morally ambiguous character. Fanfics may explore if and how he can be redeemed through his relationship with Gon. It adds depth to the story and makes for a more complex and thought - provoking read.
There's 'A Different Path' which is a 'gon x hisoka fanfic' that shows Hisoka being protective of Gon in a very unique way. It has some really interesting plot twists that keep you hooked. The author does a great job of writing their relationship in a way that's both believable and exciting.
One popular 'hisoka x gon fanfic' is 'The Unlikely Bond'. It delves into a unique friendship that slowly turns into something more complex between Hisoka and Gon. The author does a great job of exploring their characters in new and interesting ways.
One popular theme is adventure. Since Gon and Killua are often on adventures in the original story, fanfictions may continue this trend while adding the element of Hisoka's interference. Another theme is the exploration of power dynamics. Hisoka is much more powerful than Gon and Killua at first, so how they grow to face him or interact with him in terms of power is interesting.
The relationships in 'hisoka x gon x killua fanfiction' can vary greatly. Some fanfictions might focus on a possible rivalry between Hisoka and Killua over Gon. Hisoka may see Killua as an obstacle to his 'play' with Gon. Meanwhile, Gon might be oblivious to the full extent of Hisoka's intentions. This creates a dynamic triangle where different emotions like jealousy, friendship, and obsession play out, making for a very engaging read.
One great Gon x Killua x Hisoka fanfiction is 'Unlikely Alliances'. It explores their complex relationships in a unique adventure setting. The story does a wonderful job of showing how Gon's pure heart, Killua's loyalty, and Hisoka's unpredictability interact in different situations.