Yuri Tamura (田村 ゆり Tamura Yuri?) is Tomoko's classmate in her second and third year in high school. She officially meets Tomoko during class when the teacher puts her, Yoshida, and Ucchi in Tomoko's group for the school field trip to Kyōto.
Prior to meeting Tomoko during their field trip, Yuri's apparent only friend was Mako. Through this field trip she becomes an acquaintance of Yoshida and meets Ucchi. She remains very untrusting of people, and she often sets up obstacles that can push people away. She appears aware of this tendency, and she confesses to herself that it bothers her.