Well, it could be that in this 'goku y milk fanfic', the author has a really unique take on Goku's character. Maybe the milk is not just regular milk but some sort of magical milk from a far - off planet. And Goku, being his curious self, gets involved with it. It could also be that the fanfic is more about the relationship between Goku and a character who is associated with milk, like a milk - selling alien or something, and how their interactions unfold in a fictional scenario.
I'm not aware of any specifically popular 'goku y milk fanfic' stories. It's a rather niche concept, and while there might be some fan - created works out there, they may not have gained widespread popularity compared to more mainstream fanfics in the Dragon Ball universe.
I'm not sure specifically what that particular fanfic is about as there could be various interpretations. It might be a fan - created story that combines elements of Goku (from Dragon Ball) with milk and lemon in some creative and perhaps strange or unique way.
I'm not sure where you can specifically find this fanfic. You could try searching on popular fanfic websites like Archive of Our Own or FanFiction.net, but there's no guarantee it will be there.
Finding a 'Black Goku y Milk' black anime fanfic might be a bit of a challenge. You could start by looking at the tags on popular fanfic websites. Maybe search for tags related to Black Goku and then look for any that might be related to food or strange elements like milk. Another option is to follow some well - known fanfic writers in the Dragon Ball fandom and see if they have ever experimented with such an idea in their works.
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.
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.
In the manga, Gohan never managed to defeat Goku. Their battles often ended with Goku coming out on top or the fight being interrupted for some reason.