|June 11, 2095|
|Oso Academy (former)|
Inspector Akane Tsunemori
|0106 Return of the Lunatic Prince|
Yamaguchi is an adolescent female of average height and build. She has brown eyes and brown hair styled in a blunt cut. She is typically seen wearing the Oso Academy uniform.
- Yamaguchi first appears during the class about William Shakespeare.
- Her mutilated body is found in a park, dismembered and stuffed in vase.
Yamaguchi being missing is noticed by Kawarazaki.
Yamaguchi idolizes Oryo just like the other students. She followed Oryo as a henchman.
- Main article: Masami Yamaguchi/Image Gallery