Sakurai Minami is a student of First High School. She is a member of the Second Generation Sakura Series constructed by a laboratory linked to the Yotsuba Clan. She serves as Guardian of Shiba Miyuki.
SpoilerShe is the daughter of the woman who shares the same genes as Sakurai Honami. With that, she belongs to the Sakura Series and will serve as a Guardian for the Yotsuba. Both of her parents were Augmented and are now deceased. After they died, she moved into the Yotsuba main house where she served as a maid. She was trained to be a Guardian and a servant/maid, different from Tatsuya who, except for some basic manners, was only trained to be a combat magician. Minami is Shiba Miyuki's other Guardian, therefore she attends First High School as a First Year Course 1 student in order to fulfill her Guardian duties at all times. She was assigned to this post by Yotsuba Maya as an additional layer of protection against some possible moments in the future where havoc and destruction would occur.