First, decide which two universes you want to cross over. Then, think about how the characters from each universe will interact. For example, if it's a Bnha and Pokémon crossover, you could think about which Pokémon a character like Ochaco would have. Just start with a simple idea and build on it.
Begin by researching both universes thoroughly. Know the rules, the characters, and the settings. If it's a Bnha and DC Comics crossover, understand the powers and personalities of both the heroes and villains. Then, create an interesting plot that brings the two worlds together. Maybe there's a villain that can travel between the two universes and the heroes have to stop them. You can start with a small scene, like Batman arriving in the Bnha world and being confused by the quirks.
Chapter 311, "Expulsion and Unease, an Overzealous Xia Chuan (Part 3)", is the clearest early answer because it turns Yu Bin's situation into a concrete plot event. It opens with On the contrary, Xia Chuan had several deep sword wounds on his... and closes on Everyone has been notified and will be here shortly." Xia Chuan waved....
Chapter 230, "Next Step, Surrender, Set Out for Yang Lu", is the clearest early answer because it turns Hive's situation into a concrete plot event. The chapter turns that into something concrete by moving from What are your thoughts on the next steps?" Xia Chuan sat at the head... to No one knows the situation at Yang Lu, where their station is, how....
Chapter 262, "Garrison Candidates, Martial Arts Enthusiasm, and the Eve of a Breakthrough Tide", is the clearest early answer because Yuan Cheng finally turns buildup into a real advancement. The setup is The majestic golden dome; Blue leather blankets covering the entire..., but the pressure keeps building through The main hall on the top floor, when Chen Yingyuan and Peng Bo....
Chapter 263, "Offering Strategies, An Eldest Brother Like a Father", is the clearest early answer because it turns Xiao Hen's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Those stuck without breaking through to the Earth-digging Realm, Xiao... and follows through with He glanced at Xiao Ning's belly, indeed sensed a faint pulse of life,....
Chapter 261, "The Shock of Peng Bo and Chen Yingyuan, Great Xia Martial Gathering (Part 3)", is the clearest early answer because it turns Chen Yingyuan's situation into a concrete plot event. It opens with Liu Ming might simply think that his grandfather is not too... and closes on The price of beast meat has been lowered, now 1 contribution point....
Chapter 269, "Unexpected Surprise, Xu Ning's Rapid Growth", is the clearest early answer because it turns Unexpected Surprise's situation into a concrete plot event. Early on, Traveling from Wushuang to Wuyuan, one must pass through Jing Valley.... By the end, Turns out, this martial gathering rests on hunting Cold Beasts."....
Chapter 335, "Songyang Ridge, Seven Houses Surrender, First Batch of Silver Arrives", is the clearest early answer because it pushes Contribution Value into a new phase or setting. A useful checkpoint is the way the scene starts with The wide and spacious main avenue, the various precious trees... and follows through with The tall building of the West District's jurisdiction was located on....
Chapter 241, "Message, Rebellion, and the Strange Wu Xiong (4)", is the clearest early answer because it turns Hong Guang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with You have mistaken the mercy of the Great Xia for weakness!" "If you... and follows through with Peng Bo, Hong Guang, Zhu Yuan immediately followed in pursuit behind....
Chapter 271, "Eliminated, Breakthrough Surge, Green Lotus Grass (2)", is the clearest early answer because Xiang Liang finally turns buildup into a real advancement. It opens with Xiang Ping felt dizzy as he stepped off the stage. and closes on Crucially, this is only in Xia City; including Mirror Valley, Wuyuan,.... The key payoff is that it turns Xiang Liang's growth into a concrete upgrade step and sets up the next payoff in the power growth storyline linked to Great Xia.
Chapter 346, "Elite Warriors, One Against Three, The Cause of the Beast Tide [10,000-Word Chapter, Continued Tomorrow]", is the clearest early answer because the buildup finally cashes out in a real clash. Early on, Nowadays, any of these six armies alone, placed five years ago, would.... By the end, Thus, in Great Xia, it's a comparison of who breaks through more....