It could be that Hercule spreads rumors about Gohan's family or friends. Gohan, who is very protective, snaps at Hercule when he hears these false stories. He warns Hercule to stop his slander, and the situation escalates as Hercule tries to defend his actions, but Gohan won't back down.
Perhaps Hercule tries to train under Gohan in a really clumsy and disrespectful way. He doesn't follow Gohan's instructions and constantly brags about his own non - existent skills. This could lead to Gohan snapping at him out of frustration for his lack of discipline and respect.
Obviously, Hercule could be seen as the antagonist in this case. His actions or words are what lead Gohan to snap. For example, if he's constantly hogging the spotlight that should belong to Gohan and the other real heroes, it would make him the source of conflict.
Well, it could be that Gohan is being bullied at school and finally snaps. Maybe he's tired of the constant teasing about his intelligence or his differences. So he uses his hidden powers in a moment of anger and scares everyone.
One possibility could be that Gohan has been under a great deal of stress from his studies and superhero duties. Videl, perhaps not fully understanding the extent of his stress, keeps pushing him to spend more time with her or to be more involved in normal social activities. Gohan, at his wits' end, snaps at her, leading to a rift in their relationship. This could then explore how they both deal with the fallout, whether they try to repair the relationship or if it causes them to grow apart for a while before realizing their mistakes.
Well, maybe Gohan gets angry because Hercule takes all the credit for saving the world when in fact Gohan did a lot of the real work. In fanfiction, the writer might play up this injustice, making Gohan seethe with anger at Hercule's false bravado.
In this 'dbz gohan snaps fanfiction', it may depict Gohan's transformation from his normal self to a more extreme state. This could be due to a variety of factors. It could be related to the constant battles and the toll it takes on his mental state. Or perhaps he discovers some dark secret that makes him snap. The fanfiction would likely detail his internal struggle, his newfound abilities if any, and how it impacts the overall Dragon Ball Z universe. His friends and foes would surely be affected by this change in Gohan, and the story could explore all these aspects in great detail.
There are Gohan snaps fanfiction where his snapping is triggered by the loss of a loved one. He goes into a rage and his power multiplies exponentially. This type of fanfiction usually delves deep into his emotional state. It might also explore how his friends and family try to bring him back from this enraged state, which can make for a very engaging read.
One possible plot could be that Videl and Hercule team up for a martial arts tournament. They train together and during the process, they start to understand each other on a deeper level. Videl discovers Hercule's insecurities behind his bravado and Hercule realizes Videl's strength and determination. This newfound understanding could lead to a budding romance as they support each other through the challenges of the tournament.
Well, it could be that Monoma is constantly taunting Izuku about his quirk or his status at school. Izuku, usually patient, finally snaps under the pressure of Monoma's relentless jabs. Maybe Monoma makes a comment about how Izuku got into U.A. through some sort of fluke, and Izuku just can't take it anymore and lashes out verbally or even physically.
One possible plot could be that Naruto snaps at Tsunade because she refuses to let him take on a dangerous mission. Naruto, being headstrong, believes he is ready but Tsunade, thinking of his safety, says no. This angers Naruto and he snaps, leading to a rift between them until they eventually come to understand each other's perspectives.
Well, it could be that Hinata has been pushed too far by the constant bullying or pressure in the Naruto world. Maybe she finally snaps at those who have underestimated her all along, like some of the meaner villagers or perhaps even some of her rivals during a particularly intense moment in a fight or competition.