Rindou Ruri

A young girl who serves Unohana.
While she appears as a little girl in a kimono, she’s actually a fox spirit that can still take the form of a white fox. Even in her human form, she can hide her fox ears and tail at will. She admired her master Unohana deeply and pursued her when she left. She blames Haruki for separating them and holds a grudge against him.

Ruri is quite animal-like in her behavior, showing love for grooming her tail, sniffing or licking things that pique her curiosity, and giving small prey to those she cares for. She also uses quirky onomatopoeic expressions like "ujuru-ujuru" in conversation.

Unlike Unohana, she's naive about the world and often speaks from her sheltered forest perspective, seeing romance between men and women as simply "a natural part of making babies," and thinking that "fevers don't cool down unless you die." Her kimono suggests she's not wearing underwear, although this isn't confirmed. She ends up attending the same academy as Unohana (in Sana's class) but skips class often.