I am now convinced that Kiara is the Holo Elira, but instead of using her powers for her own gain she uses it to make her branch more efficient.
Can't forget Kiara's Himmler, Jenma. It worked out perfectly that Jenma is Kiara's manager, really. Jenma became lead manager for EN and they have a pact to both never leave Holo unless the other does first. Both having the drive to make the branch work are likely the primary reason for its success after its stagnation in 2022.