Perhaps Goku is summoned by the Justice League to help against a powerful new threat that the Young Justice team is also involved in. He might form an unlikely bond with some of the members, like Superboy, teaching him about pushing his limits.
One idea could be Goku arriving in the Young Justice universe due to a rift in space - time. He could initially be confused but quickly adapt and start training the young heroes, sharing his Saiyan techniques like the Kaio - ken.
A cool fanfiction concept could be that Goku is reincarnated in the Young Justice world. He retains his fighting spirit but has to learn about the different powers and politics in this new universe while also teaming up with the young heroes on various missions.
Chapter 416, ", are you still going to collect the Imperial Tax?", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. Early on, Was Gu Hang using the war to expand the alliance's influence?. By the end, When communicating using Star Language, he could distinctly sense....
Chapter 390, "Might as Well Call it Gu Hang Star Zone", is the clearest early answer because it turns Fortress Starport's situation into a concrete plot event. It opens with After the ground portion of the Starport was overrun, this became... and closes on Moreover, the Tianma Fleet didn't even need to continue exchanging....
Chapter 417, ", All Forces Attack!", is the clearest early answer because the buildup finally cashes out in a real clash. It opens with Hearing this veiled refusal, Gu Hang's expression remained unchanged. and closes on For Gu Hang, winning the war came before everything else.. The key payoff is that the chapter closes with Though I'm still runny-nosed and coughing, the lack of fever is good news!, which gives power growth a stronger narrative position and pushes the power growth onward.
Chapter 657, "a major turning point", is the clearest early answer because it turns Black Boxes's situation into a concrete plot event. The chapter turns that into something concrete by moving from Since the Korolya incident erupted eight months had passed, and Gu... to This also meant that the utilization rate of the entire space had to....
Chapter 449, "Can't Hold On Much Longer", is the clearest early answer because it turns Phoenix's situation into a concrete plot event. Early on, Anconi Ben looked down on the current Phoenix, calling them.... By the end, Looking at their bright red armor and the ostentatious Phoenix emblem....
Chapter 488, ", A Fatal Game", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The chapter turns that into something concrete by moving from Ou Juren needs to deal with 'Iron Fury Stone', and Gu Hang thinks... to However, dealing with the 'Iron Fury Stone' isn't about jumping....
Chapter 490, ", I Became an Investor in Assassin Court?", is the clearest early answer because it turns High Lords's situation into a concrete plot event. The setup is This assassination aimed at him, the mastermind behind it doesn't..., but the pressure keeps building through But the mastermind behind the scenes is no longer important, what Gu....
Chapter 401, ", Now I Have Plenty of Money", is the clearest early answer because it turns Green Bee Street's situation into a concrete plot event. A useful checkpoint is the way the scene starts with But as far as we can see now, this seems to be the level all across... and follows through with In one of Gu Hang's recent conversations with his mother, he had....
Chapter 402, ", Is This What You Call the Planetary Defense Army?", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The chapter turns that into something concrete by moving from A fiscal surplus exceeding five billion a year, this is certainly a... to The five billion will all be spent, nothing good is left to save..
Chapter 489, ", Deadly Assassination", is the clearest early answer because the violence around Gu Hang becomes final instead of hypothetical. The setup is This situation is of no concern to the Imperial Guard., but the pressure keeps building through What exactly does The Imperial Guard protect within the Terra....