Add an overarching plot with high stakes. Say there's a threat to both the Vanossgaming world and My Street that only they can stop together. This could be something like a powerful entity that is draining the energy from both worlds. By having a common enemy, it forces the characters to work together and keeps the readers hooked.
Incorporate elements of both universes in a unique way. For instance, use the gaming elements from Vanossgaming like different levels or power - ups in the My Street setting. If My Street has a magic system, combine it with the gaming skills of the Vanossgaming crew. This mash - up of concepts will make the fanfiction stand out and be more engaging.
Another interesting concept could be a character swap. For example, a main character from My Street takes on the role of one of the Vanossgaming members in their gaming scenarios. This would lead to a lot of comical misunderstandings as they try to figure out how to play the games in the Vanossgaming style. Also, the different skills and personalities of the My Street character would interact in an unexpected way with the Vanossgaming crew.
Add a unique plot. Maybe in a crossover with 'Stranger Things', the 'Office' gang stumbles upon the Upside Down while on a business trip in Hawkins. The mystery and danger of the Upside Down combined with the everyday mundanity of 'The Office' can be really engaging.
Create complex characters. Even if it's a crossover, don't just rely on the known personas of Godzilla and the other characters. Develop their relationships, like how they communicate or misunderstand each other. For example, if Godzilla crosses over with a human - based superhero, the superhero might misjudge Godzilla's actions at first.
First, you need to be really familiar with the Vanossgaming content. Watch a lot of their videos to understand the personalities of the characters. Then, choose the other universe you want to cross it with. If it's a game, know its rules and lore well.
Create complex characters. For example, make a character who is part - vampire and part - ninja. This would bring in a whole new set of abilities and moral dilemmas. The character could struggle with the bloodlust of a vampire while also trying to uphold the ninja code.
Add mystery and suspense. Since Kira is a serial killer who tries to keep a low profile, you can play with this aspect in the crossover. Have other characters gradually discover his true nature while he tries to keep it hidden. You can also introduce new twists and turns related to his Stand abilities that keep the readers guessing.
Create complex relationships between the villains. For example, show how they might initially distrust each other but then find common ground. This adds drama and depth to the story.
You can make it engaging by focusing on character development. Show how Inuyasha changes as he adapts to the new crossover world. Also, create interesting conflicts. For example, if he crosses into a world of strict rules, his wild nature will clash with those rules.
Build a unique plot. Instead of a simple 'good guys vs bad guys' plot, add some twists. Maybe the 'bad guys' in the crossover are actually being controlled by a greater, unseen force. Or perhaps there's a misunderstanding between the different series' characters at first that leads to internal conflict before they realize they need to work together.
To start your 'My Street' crossover fanfiction, you should do a lot of research on the 'My Street' universe if you're not already very familiar with it. Know the rules, the relationships between characters, and the overall tone. Then, make an outline. Write down the main events that will happen in the story, starting from the introduction of the crossover concept. You can start with a hook, like a strange event that brings the different crossover elements together, and then build the story from there. Also, don't be afraid to let your creativity run wild and break some of the 'usual' rules of the 'My Street' world as long as it makes for an interesting story.