Hazumu Osaragi (大佛 はずむ, Osaragi Hazumu
) is a student, born male, at Kashima high school in the fictional setting of Kashima ward in Tokyo, Japan near Mt. Kashima, and is the main character in the series. As a child, Hazumu grew up with his close friend Tomari Kurusu who would often protect him from bullies that would tease him and make him cry. As Hazumu grew up, he came to love floriculture and other disciplines of horticulture. In high school, Hazumu joins the gardening club, but despite his vast knowledge is not the club leader. One day early in his second year of high school, Hazumu is pressured by his friends Tomari and Asuta to confess to Yasuna, which he goes along with. However, Yasuna rejects him, which hurts Hazumu heavily. He goes up to Mt. Kashima to be around the plants he loves so much, but while up there an alien spacecraft crash-lands on him, seriously injuring him. In order to rectify this mishap, and in accordance with his own laws, the alien resurrects Hazumu, but in the process unexpectedly changes his gender to be completely female, right down to the DNA level.
Shortly after Hazumu's transformation, she is unsure on how to live life as a girl and is initially very clueless about typical female matters. Hazumu is also confused about how different people treat her after the change, though Hazumu resigns herself to live life as a girl. Despite Hazumu's physical change, there is not much change in her personality, as she still scares very easily, and has always been rather effusive, expressive and quite sensitive, which makes her fit well as a Japanese girl after the change. She has always been quite indecisive, which causes problems in the course of her changing relationship with both Yasuna and Tomari. Hazumu ends up becoming more feminine as time goes on, which is shown through her actions, mannerisms and personality. One exception to this, however, is that she never gets over referring to herself using the term boku
), meaning "I", which is usually only used by males in Japan. Hazumu is very selfless, thinking of others before herself and worries about her friends greatly. Yasuna has observed that Hazumu only smiles greatest when she is surrounded by her many loved ones.