Order of the Imperial Sun

The Order of the Imperial Sun is a military group jointly created by the Nī and Kuki clans for the purpose of revolting against the Hīragi clan for their exile. Their hierarchy is solely based on a person's skills and contributions rather than family status, which is the total opposite of the Hīragi clan's nepotism. Being under the Hīragi clan for a period of time, members of the group display exceptional fighting and spell-casting abilities, but what stood out from them are their abilities to move around naturally without creating a sound (Nī clan) and to create barriers around them as a defense mechanism should they have no ally around (Kuki clan).

History
The group was created shortly after Sakae Ichinose's death with the Hīragi branding them as traitors afterwards, which resulted to their exile. It was led by the family heads of the Nī and Kuki clans. After the apocalyptic virus outbreak, however, the leadership is then given to both Shouhei Nī and Akari Kuki after the passing of their fathers.