#the thing to remember is that i don't do intergated crossovers

[gallusrostromegalus]

Ehehe, I see that Josuke Araki has made his way into your script :P

Are there any other JoJo's floating around in Soul Society and beyond?

So I like to populate the background characters of my fic with characters from another series as just a fun reference, but I feel like some people are reading into it a little to much. It's like- well, there's a watsonian perspective on it and a doylist one and a sort of meta-watsonian one.

From the watsonian/in-narrative perspective? You know that line from that Stucky fic everyone loves about "we deserve a soft epilogue?" I like to imagine AUs for main characters where they still live in an animeverse, but are free from the burden of being The Main Character. Usuke Urameshi lives in Karakura town, but he was never The Spirit Detective. He's just some former punk with mild psychic abilities who runs the ramen shop Ichigo goes to sometimes. Josuke is just some guy that has enough power to be a shinigami, but he's just like, rank and file. You see him in crowd shots. They're alternate universe versions of their full powered, main character selves and probably happier than those versions.

From a doylist perspective, it's a fun game of reference tag to play with the reader. A sort of where's Waldo of random characters from related series. Sort of like putting Samuel L Jackson in a bit part in your movie and giving him a purple prop to fiddle with. He's not playing Mace Windu, but for sharp-eyed nerds, he is making a star wars reference. Sometimes it's just for fun, sometimes is a way to lay on some really subtle thematic context. Like overlaying a 8% opacity layer of yellow on a digital piece to give the impression of late afternoon. Nothing explicit. Nothing relevant to the plot. Just a bit of seasoning.

From a meta-watsonian perspective, a lot of how I write fic was influenced by the old Kids WB bumps where the voice actors would play their characters *as though they were actors hanging out on the warner studios lot* Batman was still Batman, but he was also a guy playing Batman on TV. Yugi moto still had the cosmic powers of the millennium puzzle but also complained about how much time he had to spend in hair and makeup. So when you see a character from another series in my fic, they're an alternate universe version of themselves that is Not Relevant To The Plot, and on another level they're like an actor famous on another show, coming in to do a bit part on their friend's show for funsies.

...but mostly I do it so I don't have to make up names for OCs I'm only using for four seconds.

To actually answer your question: Yuzu is a HUGE fan of this educational YouTube channel run by Marine Biologist Jotaro Kujo. He's the only guy who gives echinoderms their due. She shows Ukitake and Unohana and they like him a lot too. Unohana writes to him to put him in touch with Hanataro and the two put together a major survey of venomous marine life with potential medical applications. Ukitake just likes fish :).