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Masato Nogami's subordinate
Assistant teacher

Eri also appeared in 'Obscene Prison Ward'.
In this work she appears in all episodes.
At the hospital where she worked, she was seen having sexual intercourse with the protagonist Nogami, so both Nogami and her were fired.
Since then, she's been relying on Nogami and following him around, and now lives with Nogami in his apartment.
After getting a job at the school where this work takes place she becomes Nogami's reliable worker, helping him to corrupt women at the school.