Saeko Ninomiya

Saeko Ninomiya is a teacher in Syoyo High School and the teacher of Haru Yoshida and Shizuku Mizutani. Saeko asked Shizuku Mizutani to deliver some announcements to Haru Yoshida in exchange for a new study guide. She asked Shizuku to persuade Haru to go to school, but Shizuku refused. Later, she is shown to be worried about Haru, who will be expelled if he kept on missing classes.