Nina Wáng the top student in the Coral class and also one of Arika's roommates. She hails from Artai, a poorer kingdom than Windbloom with no Otome of its own. She and Nao are intended to fill this void and serve their country after graduating. Her father is Sergay Wáng , Nagi's right-hand man who is also part of the military. Arika found out that Nina was very sensitive to being tickled, which she enjoys exploiting. Nina is serious, determined and hard working because she wants to win the love of her adoptive father Sergay. Nina holds mixed feelings towards Arika. She is jealous of Arika's connections with Sergay and often annoyed with her cluelessness, but she shows friendship towards her on occasion. Nina's friend, Erstin Ho, was also her roommate who was in love with her.

(Source: Wikipedia)