Begin by choosing a unique angle for your crossover. If it's a PMMM and My Hero Academia crossover, you could start with a character from PMMM suddenly having a quirk in the MHA world. This would be a great hook. Then, flesh out the story by thinking about how the other PMMM characters will react and how they'll fit into the hero society of MHA.
First, decide which two universes you want to cross over. Then, research both. For example, if it's a PMMM and Naruto crossover, study the characters, powers, and rules of both worlds. After that, come up with a basic plot like the PMMM girls getting lost in the Naruto world and having to find their way back while dealing with ninja battles.
You should start by creating a concept for the crossover. Say you're doing a PMMM and Attack on Titan crossover. Think about how the despair of the PMMM world and the threat of Titans in AoT can be combined. Maybe the Titans are created by a powerful witch. Then, outline your story, including how the characters will interact and what challenges they'll face.
Chapter 434, ", Assassination", is the clearest early answer because it turns Purple Horse Sector's situation into a concrete plot event. It opens with The Planetary Governor was, of course, appointed by the Empire to... and closes on In this matter, Arno had questioned Martin..
Chapter 363, ", Something's Not Right", is the clearest early answer because it turns Du Shiliang's situation into a concrete plot event. Early on, These demons, existing by relying on subspace power, naturally began.... By the end, However, what Ge Wajia had to face was not just a simple 'heat....
Chapter 489, ", Deadly Assassination", is the clearest early answer because the violence around Imperial Guard becomes final instead of hypothetical. Early on, This situation is of no concern to the Imperial Guard.. By the end, However, the three Imperial Guards did not relax their guard.. Inside the broader faction conflict storyline, the chapter closes with Goodnight..., which gives Imperial Guard a stronger narrative position and pushes the power growth onward.
Chapter 488, ", Gambling with Your Life", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The setup is The representative of the Interstellar Warriors is usually a Battle..., but the pressure keeps building through The current representative is Jerry Earl Ganglong, the Battle Group....
Chapter 399, ", An Ordinary Journey", is the clearest early answer because it pushes Shang Yanwen into a new phase or setting. Early on, Shang Yanwen ultimately embarked on the journey back to Korolya alone.. By the end, A compartment of about six square meters contained two rows of.... Inside the broader power growth storyline, the chapter closes with "We regret to inform all passengers that our journey may be delayed.
Chapter 488, ", A Fatal Game", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. Early on, Ou Juren needs to deal with 'Iron Fury Stone', and Gu Hang thinks.... By the end, However, dealing with the 'Iron Fury Stone' isn't about jumping....
Chapter 451, ", Seizing the Ship Heroic Spirit", is the clearest early answer because it turns Chaotic Evildoers's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Gu Hang had once killed a Great Demon, but it was only because the... and follows through with It was Matins—the Battle Group Leader of the Phoenix, his eyes cold,....
Chapter 412, ", Heaven and Earth Collapse", is the clearest early answer because it turns Silver Pass's situation into a concrete plot event. A useful checkpoint is the way the scene starts with After several hyperlane jumps, upon entering the Golden Pass Star... and follows through with No warnings from the augury, no alerts from the Thinker Array, and no....
Chapter 405, ", The Defector Interstellar Warrior", is the clearest early answer because the buildup finally cashes out in a real clash. Early on, Over time, the Pirate Group went so far as to directly recruit.... By the end, The key point was, he wasn't a pirate, and his planet couldn't move.. Inside the broader faction conflict storyline, the danger stops being abstract and the conflict around technology upgrade becomes immediate, forcing the surrounding cast to react under pressure.
Chapter 438, ", I Am Not an Executioner", is the clearest early answer because the violence around Skyburn Torpedoes becomes final instead of hypothetical. The chapter turns that into something concrete by moving from However, at this point, deploying the Skyburn Torpedo was still just... to However, the Black Box could only produce three Skyburn Torpedoes....