Sakura is an all-boys school built by a group of super humans. Sakura students too, aren't like normal humans. There is a part of them that differs from the normal regular mortal; an unseen gift that is appreciated and valued here at University, a safe haven to all young gifted males seeking to explore their powers and be among others of the same kind.
"A small while ago our university was attacked by Humans destroying several parts of the site and injuring a lot of us, 'the gifted'. Now rebuilt, Powerful and intimidating from the outside, the Gifted no longer take a welcome approach to Mortals and a secret brotherhood called The Shield was created to make sure such an attack on the magical race was never attempted again."