Catoline could be a chef. In Rome, she learns about Italian cuisine from local chefs and samples different kinds of pasta. In England, she tries to master the art of baking scones and making fish and chips. In Japan, she studies the delicate art of sushi - making and tempura - frying, and she plans to combine the best of these cuisines in her own restaurant when she returns home.
One possible plot could be that Catoline is on a journey of self - discovery. In Rome, she might explore the ancient history, get lost in the narrow cobblestone streets, and meet some passionate local artists. In England, she could visit the old castles, experience the unique British culture like afternoon tea, and make friends with some polite locals. In Japan, she may immerse herself in the modern - yet - traditional Japanese life, visit temples in Kyoto, and enjoy sushi in Tokyo.
She might meet the Red Queen. They could have an intense conversation where the Red Queen tries to assert her authority over Alice's mom, but Alice's mom stands her ground. Or she could encounter the White Rabbit, who is always in a hurry and might accidentally lead her into some unexpected adventures.
She could meet some of Klaus's old friends or enemies. For example, she might run into an old vampire acquaintance of Klaus who has some interesting stories to tell about their past adventures together.
Well, one common theme could be cultural exchange. For example, the characters from Japan and England might interact and learn about each other's cultures while in a romantic or intimate situation. Another could be historical references, like how the two countries have interacted throughout history and how that affects the relationship in the fanfic.
Well, she may go on a cruise. Dance at the ship's parties at night, wearing a glamorous dress. During the day, she might be lounging by the pool, sipping on a colorful cocktail. And when the ship docks at different ports, she'll be the first one off to explore the local markets, buying unique souvenirs and bargaining with the vendors in a very charming way.
He might meet descendants of the Valyrian people. These could be people who have managed to survive the cataclysm that befell Valyria and have unique knowledge about the place and its history.
One challenge could be controlling her new - found strength. She might accidentally break things or hurt people close to her. For example, if she gets angry suddenly, she could slam her fist through a wall without meaning to. Another challenge is dealing with the change in her appearance. People might be afraid of her or treat her differently, which could make her feel isolated.
I'm sorry, but I don't have specific Japan x England lemon fanfic to recommend directly. However, you can try searching on some fanfic platforms like Archive of Our Own (AO3). There might be various works that combine elements of Japan and England in different storylines.
She might confront him and demand an explanation. Maybe she'll decide to end the relationship or try to work things out depending on her feelings and his remorse.
They could encounter past Avatars and learn unique bending techniques from them. Maybe they'll find ancient Air Nomad artifacts that hold special powers.