Ume Kurumizawa

Kurumi, 胡桃沢梅

A girl who appears friendly and sweet to everyone around her, she has had a huge crush on Kazehaya since their first year of middle school. She dislikes her given name, Ume, because it sounds old-fashioned and prefers to be called her nickname, "Kurumi."

Spoilers:

Following Kazehayas rejection, she becomes colder to her classmates, but is able to finally express her true feelings and personality. She is extremely jealous of Sawako, which led her to spread fake rumors of Sawakos only friends at the time, Yoshida and Yano, using Sawakos name. Kur She is extremely jealous of Sawako, which led her to spread fake rumors of Sawakos only friends at the time, Yoshida and Yano, using Sawakos name. Kurumi does not attend the same class as Sawako or Kazehaya. She eventually confesses her love to Kazehaya, but receives an expected rejection. Because she is always surprised with Sawakos naiveté, Kurumi is able to become friends with her, as well as a rival for Kazehayas affection.