Sayaka Kotani

She is the school's infirmary nurse and the teacher-advisor of the Embankment Club. Sayaka is a very casual and friendly as a nurse/teacher. But that respectable and gentle image disappears once she starts drinking. The alcohol reveals a totally different personality, that of a drunk old man, that uses the Embankment Club as a personal night club, where she can drink, eat and talk with girls. She generally appears at the club by the end of the month to get food, as she already spent most of her salary on liquor.