|Manga debut||Chapter 51|
Nakai is the secretary for Mayor Takeshi Hirokawa.
Nakai was a young woman with long dark hair, she was seen wearing formal womans attire and had make up on.
Not much is known of her personality, other than she did as her boss instructed her.
Nakai is first seen talking to Hirokawa and is informed to move his other appointments to a later period. After doing so she asks where he's going, he replies that he'll be in the building, but unless it's urgent would like to remain undisturbed.
Her currrent status is unknown, she may have been one of the few humans killed during the battle at the city hall.
- She is omitted from the Parasyte -the maxim- anime series.