PROBLEM TO BE SOLVED: To transfer a virtual person while pursuing the responsibility of a virtual person used anonymously on a network.;SOLUTION: When receiving a transaction request notification for requesting the sales transaction of a virtual person ID from a service providing device 40, a virtual person management device 10 extracts virtual person information including a virtual person ID from a virtual person information file on the basis of the virtual person ID of a virtual person to be a target of the sales transaction, rewrites a user management deice ID of the extracted virtual person information into a user management device ID of a user management device B for updating. The virtual person management device 10 transmits to a user management device A an elimination request notification for requesting to eliminate information about the virtual person ID of the virtual person to be a target of the a sales transaction, and also transmits to the user management device B an addition request notification for requesting to add information about the virtual person ID of the virtual person to be a target of the sales transaction.;COPYRIGHT: (C)2009,JPO&INPIT
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