Aki Nijou

Aki Nijou is the school nurse at Tenbi Academy in the anime Maken-ki! (and its second season Maken-ki! Two). She also serves as the staff advisor/overseer for the Maken-ki club (the student security committee).

She's a former member of the original Maken-ki from when the school was co-ed (before it briefly became all-girls), and she has a supportive, caring personality — kind, gentle, and always willing to help students with their health, Maken-related issues, or other problems.

In terms of appearance, she's portrayed as a tall, beautiful, mature woman with long blue hair, often wearing a nurse's outfit/lab coat that's revealing in the fanservice-heavy style of the series. She's especially known for having the largest bust among the female cast, which frequently draws attention from the male students (and serves as a source of comedic/fanservice moments).

She's somewhat naive or oblivious about modesty in certain situations, leading to running gags involving accidental exposure or her not fully realizing the effect she has on others. Overall, she comes across as warm and approachable, with a bit of clumsiness in personal awareness that fits the ecchi tone of the anime.