Around 3 years ago, I wrote a crossover fic between reincarnated Kanae and TMNT 2014. It's simple and straightforward, but if I ever were to rewrite it, I probably would try to dive in more with Kanae's trauma and her sister-relationship with the turtles (missing your little butterfly girls? No worries, adopt mutant turtles instead!)
I would start with Kanae's second life parents involved with the Renaissance Project so Kanae and April knew each other. Then Kanae meets up with young turtles and they grow up together.
Why did I do this story? Just for funsies :3
(gonna link Kraang's involvement too tho)
Was sketching while waiting for a bus and oops! Made another crossover that I may or may not elaborate more.
I imagine this as an AU where Nezuko reverts back to being a demon a few years after the final battle and is seeking for a cure for herself when she stumbles upon the turtles tots after meeting up with The Ancient One.
(also I am lacking memories in TMNT 2003 version but it can be a mix with other variations. Depends on my mood or idea lol. Any ideas will be appreciated.)
I actually stumbled on your timeline and saw TMNT Bayverse x KNY and wanted to read it but cant find it :(
I am not that good in writing fics but it's called Bloom || kny x tmnt 2014 on Ao3
https://archiveofourown.org/works/41739387/chapters/104711763
TMNT 2014 x KNY but with reincarnated Kanae instead
I feel like she'd adopt the turtles immediately as her little siblings. She's most patience with Raph so he would be the closest to her, Leo would admires her swordsmanship skills, she'd help out Donnie when it comes to medical stuff, and plays a lot with Mikey.