Russu Nu Hoang

Russu is first introduced as a dream version of what appears to be Joki's love interest before appearing in Aisho, a Russu that Joki "perfectly remembers" according to page 661. She's cynical and sarcastic, this can be seen with her harsh but, playful remarks towards Joki. She somewhat mirrors Joki's vibrant blue hair, with her rosy long hair.

Due to her last name, Nu Hoang meaning "Queen" it's presumed that she has Vietnamese roots.

Biography
Not much is known about Russu, Her and Joki appear to have a somewhat of a complicated romantic relationship. Joki expresses that she's happy when Joki sees an illusion of Russu on his dream, claiming that he misses her. Russu states on page 664, that she was Joki's "only real friend", before sharing a romatic kiss. However, Russu quickly starts to act hostile towards Joki after he apologize for the "terrible things" he's done to her. She calls him fake, and that she never missed him at all. She tells him that she wouldn't miss him after he hurt her, and that she never wanted to see him again.