Nagisa Tsuwamono

Satsuki’s younger sister and Aoi's aunt, Nagisa is the manager of a beach house known as “Ocean House.” She asks for Satsuki and her employees to come and work at her beach house during the summer since her shop is not as popular as she would like. Nagisa is somewhat tough on Aoi for trying to dress like a girl because her older brother sent Aoi to her beach house to become more masculine. (Source: Wikipedia)