The theme of legacy is quite common. Goku is a legendary figure, and in fanfiction, his legacy - what he leaves behind for future generations - is often explored. Also, the theme of redemption can be found. Maybe Goku made a mistake in the fanfiction's plot, and he has to redeem himself. And the concept of the hero's journey is also there. Goku's path as a hero, with its challenges, growth, and revelations, is a recurring theme in serious Goku fanfiction.
One great serious Goku fanfiction is 'Goku's Redemption'. It delves into Goku's inner struggles after a major battle where he made some tough decisions. Another is 'The Trials of Goku' which focuses on his journey to master a new form while dealing with the politics of the Saiyan race. And 'Goku's Ascent' is also worth reading, where he tries to reach a new level of power to protect his family and the Earth.
You can focus on their emotional bond. For example, show how Goku's pride in Gohan's growth and achievements affects their relationship. It could be about Gohan seeking Goku's approval and Goku being there to give it wholeheartedly.
I haven't come across such a fanfiction specifically. It seems like a very strange and unlikely crossover considering they are from different fictional universes. Erza Scarlet is from 'Fairy Tail' and Goku is from 'Dragon Ball'. The two universes have very different rules, powers, and storylines, so this would be a really out - there concept for a fanfiction.
I recommend " Today's Remarriage Failed Again ". This is a modern romance novel about a wealthy family. The main theme is to abuse the male protagonist. The male protagonist is a fake scum. You need to be patient. The male protagonist hurt the female protagonist for many years without knowing it. The female protagonist was reborn and left him. The male protagonist was completely abused. The male lead will have all kinds of reactions that you want to see in the later stages, such as suicide. But the ending was perfect. If you like to read novels that abuse the male protagonist, then I think you will like it. However, if you like to read sweet novels, please choose another novel. I hope you like my recommendation.
The comic delves into themes of identity, reality, and the nature of good and evil. The story follows characters on a journey of self-discovery in a strange and mysterious world.
Well, Vegeta would be a likely character. He might be initially suspicious of the female Goku. Maybe he thinks she's a threat or just can't believe there's another Goku - like being. He could be there to add some comical moments as he tries to understand the situation.
It would be a really wild and interesting concept. Naruto's ninja world and the Dragon Ball universe of Goku Black are so different. Maybe Naruto would inherit some of Goku Black's powers like his ki manipulation. He could use it in unique ways in the ninja battles, like combining rasengan with ki blasts. And his personality might be a blend of Naruto's determination and Goku Black's more menacing side at times.
It could be really interesting. Naruto might be fascinated by Goku Black's power and his unorthodox way of achieving his goals. He could study Goku Black's fighting style and try to incorporate some elements into his own ninja techniques. Maybe Naruto would also be intrigued by Goku Black's confidence and his disregard for the traditional order in the Dragon Ball universe.
Perhaps it was because he wanted to leave a good impression on you at the beginning, so he was very enthusiastic and indecent. Now that you've been together for a few years, he knows you better and is more serious about your relationship and future. This is a good change. It shows that his feelings for you are deeper and more serious. But if you still want to see his indecent side, you can try to be mischievous with him or remind him to relax at the right time and place. In addition, if you want to read some good novels to relax, I recommend " You Don't Understand the Heart of a Student Scum " and " The Adorable Wife of the Diamond School Hunk ". They are both very healing and sweet. I hope you like my recommendation.