Gokusai

could refer to:
 * Gokusai Kaibi: The second of the three Gokusai sisters and a member of SCHOOL, also known as Measure Heart (after her ability) and the 'girl in the dress'
 * Gokusai Rikuri: The eldest of the three Gokusai sisters
 * Gokusai Amazora: The youngest of the three Gokusai sisters