Little Red [M Human -> F Wolf] by StilettoPink and Watsup (Link to SFW-er version in comments)
"The weak are destined to lie beneath the boots of the strong. If that angers you, overcome your deficits."
Yuushibu / I Couldn't Become a Hero, So I Reluctantly Decided to Get a Job / Yuusha ni Narenakatta Ore wa Shibushibu Shuushoku wo Ketsui Shimashita
[Eudetenis] Ruby, we're cats. No one Triple Dog Dared you to lick it... (Blake, Ruby, Nora and Semblance Clones)
Ukemi = bottom: the verb ukeru means to "take, receive, accept," thus uke (receiving) mi (body, party) means "one who receives," or, "a bottom." Neko = bottom: neko literally means "cat". It has exactly the same meaning as ukemi, but in a slangier way.
Yuushibu / I Couldn't Become a Hero, So I Reluctantly Decided to Get a Job / Yuusha ni Narenakatta Ore wa Shibushibu Shuushoku wo Ketsui Shimashita