Well, perhaps a fanfiction where Gohan discovers Android 18 has a secret love for lemons. So he decides to surprise her with different lemon - based treats. They could go on adventures together in search of the rarest lemons in the world. This could also involve some of their friends from the Dragon Ball universe, like Piccolo being a bit skeptical of their lemon - centered quests.
One idea could be a story where Gohan and Android 18 team up for a martial arts tournament. The 'lemon' aspect could be used in a light - hearted way, like they share a lemonade after a tough match. Another could be a story where they have to protect a lemon grove from an evil force. Maybe the grove has some special power that the bad guys want.
A plot could involve Gohan being accidentally sent to a dimension where everything is made of lemon - scented substances. He has to find a way back home while dealing with the strange inhabitants of this world. He could learn some unique skills from them that are related to the lemon environment, like using lemon - essence to boost his ki attacks in a new way.
One idea could be a training session that takes an unexpected emotional turn. Goku and Gohan are training hard, but then they start sharing their deep feelings for each other as father and son. This could lead to a moment of intense bonding that makes their relationship even stronger.
A third plot idea is that Bulma discovers an ancient artifact that has some strange power. She enlists Gohan's help to figure out what it is and how to use it. Along the way, they have to face off against some villains who also want the artifact. During this adventure, Gohan learns more about the scientific side of things from Bulma, and Bulma gains a new appreciation for Gohan's combat skills.
One plot idea could be that Towa, who is a villain - ish character, has a change of heart and teams up with Gohan to protect the Dragon Ball universe from a new, powerful threat. Maybe they have to travel to different dimensions to gather special artifacts to defeat this threat, and along the way, they learn to understand and respect each other's powers and motives.
Another plot could involve Gohan and Videl having to deal with a strange power that is affecting the people around them. They might have to figure out the source of this power and find a way to stop it while also strengthening their relationship. This could include some emotional moments between them as they support each other through tough times.
One interesting gohan lemon fanfiction could be about Gohan's new power - up and how it affects his relationships in a romantic way. Maybe he meets a new character and they have a unique connection that's explored in the story.
I'm not sure about specific 'gohan and trunks lemon fanfiction' as it might involve non - canon or inappropriate content. But if you're looking for regular Gohan and Trunks fanfiction, there are many platforms like FanFiction.net where you can find great stories about their adventures and friendship.
A fun idea could be a crossover where Gohan's friends from Dragon Ball also get involved. The Avengers are initially confused by these strange new allies with tails. Gohan has to act as a bridge between the two groups, and together they face a common enemy that requires both the technology of the Avengers and the martial arts skills of Gohan and his friends.
A great plot could involve Videl getting a new power or ability and Gohan helping her master it. This would not only show their support for each other but also their growth as individuals. Also, a story about them planning a big family event, like Pan's birthday, could be really interesting as it would show their family dynamic.
One possible plotline could be Goku and Gohan going on a special training adventure together in a fanfiction. Maybe they discover a new power or technique during this adventure. Another could be them facing a new and powerful enemy that they have to overcome using their combined strength and family bond.