I think Dove Cameron would be an excellent Katie. She has the right look and acting skills to bring out the different aspects of Katie's character, whether it's her determination or her dreamy side. For Luke, perhaps Ansel Elgort. He has a certain elegance and charm that would suit a character like Luke, and he can also show the character's growth throughout the story.
For Katie, I could see Zendaya. She has the ability to portray a strong - willed yet vulnerable character, which would be perfect for Katie. As for Luke, Timothée Chalamet would be a great choice. He has that boyish charm and can bring out the kind - hearted and somewhat naive side of Luke that would be expected in a Cinderella - inspired story.
Maybe Millie Bobby Brown could play Katie. She's shown her range as an actress and could bring a fresh take on the character. For Luke, Tom Holland might be a good fit. He can play the charming and heroic type well, which is what Luke would need to be in this fanfiction - based movie.
For Katie, she could be developed by giving her more complex emotions. For example, instead of just being a meek character, she could have moments of great strength and determination. Maybe she has a secret dream that she's been too afraid to pursue until she meets Luke. Luke, on the other hand, could be developed by showing his insecurities. Despite his seemingly confident exterior, he could be afraid of not living up to his family's expectations. Their relationship could then be a journey of them helping each other overcome their respective fears.
A plot could involve a masquerade ball. Katie is only able to attend in a simple but beautiful dress she made herself. Luke, not knowing it's Katie at first, is immediately drawn to her. They share a magical dance. Later, when he tries to find her, he has to search through different clues. Meanwhile, Katie's step - like people try to keep her from Luke. In the end, Luke discovers Katie's true identity and they end up together.
One idea could be that Katie, instead of being a meek character like in the original Cinderella story, is a feisty artist. She meets Luke at an art exhibition where she is showcasing her work. Luke, a wealthy heir, is immediately drawn to her unique perspective. They start a friendship that slowly blossoms into love, all while Katie has to deal with her mean step - family who try to sabotage her art career because they are jealous of her growing relationship with Luke.
Their relationship could grow stronger. As they experience the pregnancy together, they might become more understanding of each other. For example, Luke could become more protective of Katie, and Katie could rely on Luke more, which deepens their bond.
One idea could be that Katie and Luke are young and unexpected pregnancy throws their lives into chaos. They have to deal with family reactions, like Katie's parents being disappointed at first but then coming around. Another could be that they are in a world where pregnancy is rare, so their situation becomes a sort of miracle that the whole community gets involved in, with different reactions from envy to celebration.
Well, the term 'b93 roofsit for kids' is very ambiguous at the moment. It could potentially be a special project or event with the code 'b93' related to kids sitting on roofs, which might be for fun or some educational purpose. Now, Katie in Katie's story could be a child who has a unique experience during this 'roofsit for kids' activity. For example, she might have overcome a fear while on the roof, or she could have learned something important during this time. But again, this is all speculation without more context.
In addition to the main ones like Jibanyan and Whisper, there could be Venoct. He's a cool and somewhat mysterious Yo - Kai. He might initially seem like a threat but then turn out to be an ally to Katie. There's also Robonyan. As a robotic Yo - Kai, he could be helping Katie upgrade her Yo - Kai Watch or use some of his high - tech abilities to fight against bad Yo - Kai. And then there's Komajiro, Komasan's little brother. He could be tagging along with Komasan and getting into all sorts of cute and comical situations with Katie.
Luke might meet other students. Some could be from noble families, others from different planets. There could be a bully - type character who gives Luke a hard time, and also a kind - hearted student who becomes his friend.
Jibanyan would be a great addition. He's Nate's main yo - kai partner, and his goofy yet brave personality can add a lot of humor and action to the story. For example, he could get into some trouble while trying to protect Nate and Katie.
Perhaps Mayor Humdinger could be an antagonist. He might see Ryder and Katie's impending new family member as a distraction for the Paw Patrol and try to take advantage of the situation. He could plan some sneaky schemes to disrupt Adventure Bay while Ryder and Katie are focused on the pregnancy.