Jyorta recalled the statement said to him by the nurse lady, Vaika. She mentioned how if compared based on their importance and achievements in the military, she was ranked second, right after Madam Mary who had created the Unranked Skill, Regen, and the Trait of Growth.
So, it meant there were other staff ranked right after her, having achieved a significant contribution to Marble City. And, since the contracts worked the same as between Vaika and Jyorta for the usage of Aura Induction, it meant other staff too were in search of worthy students to inherit their life's accumulations.
First of all, that would give the staff a steady revenue stream. And secondly, the student that inherits their life's work would look up to the respective staff as a teacher for all their life. It would form a bond between them, a powerful connection.