https://www.fanfiction.net/s/2938041/1/La-Blue-Ranma by
Innortal. R/LaBlueGirl/SM crossover, stalled at five chapters.
Bad news: Ranma is a half-Shikima. Worse news: He got it from his mother, Nodoka, a Shikima princess who has had full-blown Grandchildren Desire Disorder since she was eight years old, and Manliness Obsessive Syndrome since... I don't know when. No wonder she was married off into the Saotome clan.
Note: This is a lime story, which means that sex is mentioned but not performed on screen.
I am so counterculture, I don't even take selfies.