Mitsuki Saitō is a main character from the oneshot The Proof of Her Love of Yuri Hime Collection. An easygoing and loyal girl who fell in love with a female teacher.
- Before she confesses her love to Tanaka Yamamoto sensei, she gave a girl who was in love with her a kiss.
- She can get too close to Tanaka sensei to the point where she shoves her away from her.
- She kissed Tanaka sensei and loyalty proved that her love for her is true and that it's not just a passing infatuation,whatever years have passed she was still waiting for her answer.