Iria Raison is the estate executor for Tiore Christella's inheritance and vice-principal of the Christella Music Academy. She alone possesses detailed knowledge of the inheritance's specific conditions tied to Fiasse Christella. This inheritance becomes a central plot element when Fiasse receives threatening letters referencing it, sparking heightened security concerns. Iria manages the academy's administration and navigates the inheritance's legal complexities throughout the ensuing crisis.