I hope you're looking forward to this exchange as much as I am. I'm primarily an anime guy, so that's where most of my fandoms are coming from. Hopefully this letter will give you a sense of the general things I like and don't like as well as some ideas for the individual fandoms.
GeneralThings I'd like in this exchange: character development and introspection, angst, characters being put in difficult situations/having to make hard choices, friends as chosen family, trust dynamics, caring for injuries, action.
Things I'd prefer not to have in this exchange: unhappy endings (bittersweet endings are fine), character death, intentional badfic, character bashing, AUs (canon divergence is fine), characters as biologically related (unless they're related in canon)
Black JackI've always been interested by the dynamic between Black Jack and Kiriko, and I'd love to see it explored more. They have very different worldviews/moral codes that often put them in direct opposition to one another, but canon (especially OVA/movie canon) also shows that they can and do work together when need be, and they'll put themselves at risk to protect the other. Feel free to pull from any part of canon (including Young Black Jack).
UraBokuI'm interested in different things for each pairing I requested, so I'll talk a little about each one individually.
Hotsuma and Luka: I'm interested in their dynamic with each other, especially as it relates to Hotsuma's changing feelings towards Yuki and Luka. Some potential ideas include Hotsuma having to ask Luka for help (especially for something not having to do with Yuki), Hotsuma and Luka needing to work together (either to protect Yuki or for some other reason), and Luka's response in the aftermath of Hotsuma's suicide.
Kuroto & Shuusei: Canon says that Shuusei is something an empath and is good at picking up on what people aren't saying. Kuroto has a lot that he doesn't say, so I'd like to see that dynamic explored more. Both of these characters also fear abandonment, though for different reasons (fear of not being strong enough to protect the people he cares about for Kuroto and fear of being abandoned in favor of another for Shuusei), so I think that could be another interesting angle to take.
Tooko & Tsukumo: There are so many options for domestic fluff with these two. If you prefer something darker, then there's always hurt/comfort focusing on the aftermath of a time Tsukumo puts himself in danger/is injured. Or, for a twist, the same situation except with Tooko being the one in harm's way.
NarutoI love mission fic, and I love fic that addresses some of the darker parts of the world that canon seems to gloss over (like the repercussions a world where warfare in various forms is constant and child warfare is the norm). For the pairings with Itachi, I'd love to see fic focusing on his time in ANBU before the Uchiha Massacre. Please ignore the fact that Neji is dead if you're working with one of his pairings. For both Neji & Shikamaru & Temari and Shikamaru & Temari, I'm interested in the working relationship between Konoha and Suna and how that's developed/functions now. I'm also interested in their dynamic as a team given that they are all some of the more level-headed and intelligent of their cohort. I'm interested in a similar dynamic for Neji & Shikamaru, but with the added dynamic of both of them being called "geniuses," even though that's a label they would not have chosen for themselves.
Yowamushi PedalFor all of these pairings, I'm interested in their dynamic as teammates and/or rivals and how they push each other and support each other whether it be in cycling or in other things. For any of the third-year pairings, I'd also be interested to see how things change when they go off to college/overseas/etc. after graduation.
Kuroko no BasukeAnother fandom where I'll go through the pairings individually.
Hyuuga & Kiyoshi & Riko: I'd be happy with any combination of these three. A couple of areas I think would be interesting to explore would be their dynamic as "team parents" and how they interact with the rest of the team and/or how they dealt with Kiyoshi's knee injury and subsequent rehab/recovery.
Akashi & Midorima: There are so many possibilities for this pairing I'm not sure where to start. There's the two of them happily playing shogi and hanging out together at the beginning of middle school. There's Midorima hurt and angsty at the end of middle school/beginning of high school wondering what went wrong and how two fix it. There's the two of them starting to fix things after the Winter Cup.
Himuro & Kagami: Another pairing with a lot of possibilities. I'd love to see more of their low-key hanging out post-Winter Cup (like their cooking together from the OVA), or if you want something darker, then the time during the Winter Cup where they both thought their friendship had been irreparably damaged. If you'd rather go the child route, then some of their adventures while they were growing up in the US.
Prince of StrideFor the two first-year/third-year pairings, I'm primarily interested in the mentoring aspects of their friendships (either in Stride or in something else) and how that changes as the first-years gain more experience and confidence. For Kyousuke & Heath and Kyousuke & Tomoe, I'm primarily interested in what happened after the incident their second year, the angstier the better.
As with most of the sports anime, I'm interested in these pairings mainly in the context of their dynamics on the team, though that can also extend to their dynamics off of the court.
Kenma & Kuroo: I'd love something more on the domestic/fluffy side for these two whether it's playing video games, doing homework together, or having that moment of perfect connection during a game.
Asahi & Sugawara: I'd love something that explores the interactions between Karasuno's resident worrier and Karasuno's team mom.
Daichi & Sugawara: I'm most interested in the dynamic between these to in the context of their role as the "team parents."
This is very much my guilty pleasure request for this exchange. I love injury-tending hurt/comfort dynamics, so I'd love to see something where either Izaya is hurt and forced to come to Shinra for treatment, or where Shinra is hurt and Izaya takes over treatment (especially if it's a case of Izaya taking over because Shinra was trying to do it himself).