Machiko's salary and other benefits flow through the Security Directorate of Nagato Corporation, and for purely legal purposes she is registered as a security officer of the corp, but she is not truly a corporate employee. The Green Serpent Guard is the elite force belonging exclusively to the Chairman. They obey only those orders that come from Honjowara -sama himself. They accompany Honjowara -sama wherever he goes and everyone knows this and so no one would ever question their right of access to any clan or corporate property.