Курата Саюрі

Sayuri is Mai Kawasumi's only friend before she meets Yuichi, and thus her biggest part is in Mai's story. She is the daughter of a wealthy family, and always tries to smile and help others. She uses more formal Japanese honorifics for Yuichi when she addresses him, even when they become close friends. Sayuri cares very deeply about Mai, as it shows since they not only hang out together constantly, but Sayuri will get worried if Mai is in trouble; she also never forgets Mai's birthday. Initially, she is completely ignorant about the demons but even though some begin to target her near the end of Mai's story, she stubbornly stays by Mai's side.

Sayuri, as with Ayu and Makoto, has a cute quirk; when she laughs, she voices a distinct Ahaha. Sayuri always addresses herself in the third person due to an event in her past. In episode 14, Sayuri reveals that had a littler brother, Kazuya. Sayuri was raised by her dad to always have good manners and when Kazuya was born, she adopted a tough love approach to raising him and treated him strictly so he will grow up to become strong. However, she really wanted to play with him and give him what he wanted and see him smile. Kazuya then suddenly became sick. When Kazuya's condition worsened, Sayuri went out to buy water pistols and snacks for him and played together with him.