Unit:
Eve

Club:
Flower Arrangement Club

A third-year student at Reimei Academy. Although he has a bright and cheerful demeanor, he is selfish and doesn't have much interest in talking about others. Born with royal ancestry, he recognizes others as people below himself. He is a member of the units Eve and Eden, and the leader of Eve.
While flippant and eager to remind everyone of​ his superiority, he grows attached to others easily and has a habit of picking up those in need. He still considers those from the former fine to be his friends, and even if he has to change his schedule he is willing to put time into helping others if they really need it.
Due to his older brother succeeding as the heir in his family, Hiyori tends to be more laid-back in regards to his family's business.
(Source: Ensemble Stars! Wikia)