One idea could be that Yuuri Katsuki, being a world - class figure skater, is invited to perform at an event in the Victorian - era setting of Black Butler. Sebastian could be tasked with making sure the event runs smoothly and he's both intrigued and somewhat amused by Yuuri's unique form of art. Ciel, on the other hand, might initially be dismissive but then becomes interested in the grace and athleticism Yuuri shows on the ice.
In 'yuri on ice crossover fanfiction', the opportunity to see familiar characters in new settings is really appealing. When it crosses with a fantasy series, like 'Fairy Tail', the figure skaters might find themselves in a world full of magic and quests. This changes their dynamics completely. Also, the fanfiction often explores how the skills of the figure skaters can be adapted or used in the new worlds. For example, in a crossover with 'Naruto', the skaters' balance and agility could be seen as valuable assets in the ninja world, which makes for some really creative story - telling.
Well, there's a 'yuri on ice crossover fanfiction' where it crosses with 'My Hero Academia'. It often has Yuri and the other skaters having quirks or interacting with the heroes and villains. It's really exciting to see how the world of figure skating fits into the superhero - filled world of 'My Hero Academia'. And there are also some that cross with 'Sword Art Online', where the virtual reality aspect of 'Sword Art Online' is combined with the ice skating competitions in 'yuri on ice'.
One popular Yuri on Ice and Haikyuu crossover fanfiction is 'On Ice Courts'. It combines the figure skating elements from Yuri on Ice with the volleyball action of Haikyuu in a really interesting way. The characters from both shows interact in a fictional sports event that brings out new aspects of their personalities.
One common theme is friendship. Female characters often form deep and meaningful friendships with Yuri. For example, they might support each other through tough skating competitions. Another theme is self - discovery. Yuri may learn more about herself through her interactions with female characters.
For Yuuri, he may become more assertive in the Black Butler world. He has to adapt to survive, so his shyness might take a backseat. Sebastian would still be his composed, devilish self, but he could develop a newfound respect for Yuuri's tenacity. Ciel, whose main goal is often revenge, might be distracted by Yuuri's presence. His personality could shift from being so single - minded to being more conflicted. Yuuri's focus on his art and self - improvement could make Ciel re - evaluate his own life's purpose, and he may start to wonder if there are other paths he could take besides revenge.