Generally, Goku still holds the edge over Vegeta. Their power levels fluctuate, but Goku often achieves higher peaks of strength and unlocks more powerful forms first.
It might not be exactly what you need, but I would recommend a novel that is most relevant to your description." Dragon Ball Super: Endless Dimensional Chaos " is a light novel by the author, Fire Fist. The general plot of this novel is as follows:
After the time-traveling Wujita participated in the Dragon Ball super-timeline incident, she welcomed a new enemy! Transdimensional's members had participated in multiple martial arts competitions in parallel universes and encountered super powerful warriors from various parallel universes! In a certain space-time, after Vegeta and Sun Wukong merged, Becket, who could not be separated due to an accident, would choose Qiqi or Bulma to live with. How strong was Sarroux, who had defeated Super Two Gohan by chance and devoured Z-Warrior's doll? What kind of strange historical changes had happened in gt-space...
----------------------------
" Dragon Ball: This Cyborg Is Super Strong " was a light novel by the author, Ray Shower. The general plot of this novel was:
Transformed into Cyborg No. 17 in Dragon Ball, facing a series of powerful enemies such as Super Vegeta, Ultimate Saru, Super Sanbroli, Demon Buu, Evil One-Star Dragon, and so on. Fortunately, he had the interface with him. He looked at the various labels in his backpack. [Permanent Energy Furnace],[Great Demon King],[Villain Boss],[Super Saiyan],[Demonkin Power]…Number 17 calmly waved his hand, indicating that he would change the label first!
----------------------------
Dragon Ball: Super Saiyan was a light novel written by the author, Bu Cun. The general plot of the novel was:
After the super warrior Wujita, who was the fusion of Sun Wukong and Vegeta, defeated the evil thought wave, hell was in ruins. Terrifying energy tore through the barrier of hell wantonly, space and time were chaotic, and the Six Paths were destroyed. Wujita used the Doppelganger Technique to split into two, preparing to use a face-to-face attack to calm hell. Unexpectedly, when the time for fusion arrived, the doppelganger had already been sucked into the Six Paths of Reincarnation...
----------------------------
" Dragon Ball Game with Wu Kong " was a light novel written by the author, Scumbag Zhang. The general plot of this novel was:
If Sun Wukong was a woman;
If Sun Wukong hadn't hit his head;
If Sun Wukong got married;
If the baby that Sun Wufan picked up was Vegeta;
If Sun Wufan had purple hair;
If God merged with Lord piccolo;
If the script was completed…
----------------------------
" Starting from Dragon Ball " was a light novel by the author, Desperate Night. The general plot of the novel was:
It was a classic and a god. Starting from Dragon Ball, Dragon Ball Z, Dragon Ball MT, and Dragon Ball Super, Hot Blood, and Madness, there is only one goal: to constantly become stronger, break through the limits, and break through the peak. This book will bring you into the original Dragon Ball world. The Dragon Ball was just the starting point. The next step was to embark on a long journey.
----------------------------
" Dragon Ball's Strongest Sun Gohan " was a light novel by the author, Nightingale X. The general plot of this novel was:
He was originally an employee of an animation company, but because he was hated at work, he was pushed into a speeding car and died. He thought he was dead, but he was reborn in Sun Wufan's body. In the face of the endless dangerous plots in the Dragon Ball, Sun Wufan used his own talent and memories of his previous life to let him successfully display the various abilities in the anime. I heard that Vegeta is very strong? It's okay. I have the ability to control telekinesis. I heard that Frisa is very strong? It's okay, I still have the experience of Asura Blade… With the combination of imagination and animation memory, Sun Wufan used his powerful talent to become the strongest! Immortal State? Free Extreme Will Technique? Wouldn't that kind of thing be comprehended naturally? Did he still need to be taught?
----------------------------
" Diablo Dragon Ball: Super Earthling " was a fantasy novel written by the author, Lun Tai. The general plot of this novel was:
The King of Assassins accidentally transmigrated to a Dragon Ball Earth without Goku and became the little monk Clint. As his soul switched, he was lost in an unknown space-time. There were immortals who were above everything there, and there were terrifying enemies that surpassed their understanding. They advanced with difficulty in the endless battle and darkness, looking for a direction. Super decisive and invincible! A half-immortal, half-hot-blooded, half-doujinshi with a little bit of love, hatred, and family disputes! A grand world view!
----------------------------
" Adventures in the Dragon Ball " was a light novel by the author, Bajita. The general plot of the novel was:
The super divine dragon flapped its huge golden wings and slowly opened its eyes. "Human, what wish do you wish to fulfill?" Li Meng looked at King Quan, who had fainted at his feet, and smiled." Please restore the Seventh Universe that King Quan destroyed and revive the humans that King Quan killed." "It's a small matter!" " Only one?" Li Meng was stunned when he saw the dumbfounded Sun Wukong appear in front of him." Only one?" "Isn't there just one?" The super dragon looked at Li Meng's puzzled eyes and suddenly realized," You mean the living humans before the disappearance of the seventh universe? "When you fought with King Quan, your strength was too strong. The seventh universe was destroyed by you with one punch…" Li Meng could only smile bitterly when he heard that. It was over. He had made a mistake. He had to collect the dragon balls again. This was the story of a systematic transmigrator who kept getting stronger, and stronger…
----------------------------
" The Crane of Dragon Ball: Rise of the Immortal Stream " was a light novel by the author, Wandering Siam. It was a derivative doujinshi novel. The general plot of the novel was as follows:
The protagonist came to Dragon Ball World by accident. Using his knowledge of the plot, he first took in the villains Piraf and his two companions who were defeated by Goku. Then, he successfully infiltrated the headquarters of the evil organization, the Black Silk Army, and stole a lot of treasures. Unfortunately, he was discovered when he left. On the one hand, he was regarded as a hero and sought after by the world. On the other hand, he was identified as the murderer of the leader of the Black Silk Army and was hunted down by the entire organization. In order to save his own life, the protagonist used his relationship with Tao Baibai to become a disciple of He Xianliu and became Tien Chien's junior brother. Later, he used his knowledge of the plot's progress to go to Galinta ahead of time and began to be active in the Dragon Ball world. In the future, he would participate in all events and battles with the Saiyans. This article is mainly based on the Dragon Ball world of Toriyama Akira's manga. It may be inserted into the super universe and other derivative plots in the future.
----------------------------
" Dragon Ball, Traversing the Universe Simultaneously " was a light novel by the author, Sanfen Yuanqi. The general plot of this novel was:
At the same time, he traveled through the universe and left behind countless legendary dragon balls. [Ultraman: From today onwards, Old Black Bei, Ampera, Rainbow Dragon, Luge 'er, and Dark Zaki will all respect me as the Great Dark Lord.] [I'm Zod's son. I represent Krypton. Do you know how strong the Kryptonians who can move at the speed of light are?] [Monster Universe: King Kong, I have a copy of Eight Nine Mysteries here. Are you interested?] I'll only sell it to you for 9.90 yuan! [Storage Universe: I ran into the Blue and White Society today. I'm a little flustered!] Naruto, Marvel, Demontail, Wuxia, countless movie worlds, and novel worlds all have legends of me.
In some fanfictions, Gohan and Goku might have a series of conversations that open up new levels of understanding between them. Gohan could share his thoughts and feelings about his life and future, and Goku would listen and offer his own insights. This kind of communication can really strengthen their bond.
In such fanfictions, Goku might develop by becoming more of a mentor to Gohan. He could teach Gohan new fighting moves and also how to control his emotions better during battles.
In a Gohan x Goku fanfic, their relationship can be delved into by creating scenarios where they have to rely on each other completely. For example, if they are in a situation where Goku's strength and Gohan's intelligence are both required to escape. Their different personalities can also be highlighted. Goku's carefree nature contrasted with Gohan's more studious and responsible side. And of course, flashbacks to Gohan's childhood and how Goku's presence or absence affected him can add depth to their relationship.
Bulma could be involved. Since she has a relationship with Vegeta and is friends with Goku, she might try to mediate between them when Goku snaps at Vegeta. She could be the voice of reason, trying to calm both of them down and make them see each other's point of view.
One possible interaction is that Bardock could spar with Goku and Gohan. He'd test their limits and see how much they've learned about fighting. Another could be Bardock sharing stories of Planet Vegeta with them, which would be really interesting for Goku and Gohan to hear.
Yes, in the vast world of fanfiction, there are all kinds of creative and out - of - the - box stories. Some fans like to explore unusual relationships and scenarios, so it's possible that there is such a fanfiction out there. However, it goes against the original canon of the Dragon Ball series in many ways.