![Mizuno](https://img.flawlessfiles.com/_r/400x400/100/02/9f/029f30aadee885ab423a50501b630251/029f30aadee885ab423a50501b630251.jpg)
Mizuno
水野先生
A 33-year-old teacher, Mizuno teaches Health education. Despite her age and status, she still calls Iroe "Nee-san." She is also the best friend of her fellow teacher Masuda whom she affectionately refers to as "Masuda-chan." She has bitter memories of her ex-boyfriend breaking up with her because of a hairy back.
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Plastic Neesan
Supporting (Role) ONA
![Kurata, Masayo](https://img.flawlessfiles.com/_r/100x100/100/a9/f6/a9f6840a278f7ad794f06a8e6e48e65b/a9f6840a278f7ad794f06a8e6e48e65b.jpg)