Mobile devices and wireless network infrastructures will be leading users to seamlessly use peer-to-peer services and ubiquitous computing by the growing of the infrastructures. In order to realize to use peer-to-peer services and ubiquitous services seamlessly, a new framework that enables users to use peer-to-peer services and ubiquitous computing is required. Hence, this paper describes a new ubiquitous computing framework, called VPC on KODAMA, using a peer-to-peer mechanism. Virtual Private Community (VPC) is an execution environment for peer-to-peer services, and provides a framework for definition of peer-to-peer services. Peer-to-peer services in VPC are defined as policy packages that have necessary elements to provide the services. Peer-to-peer services are offered in communities by collaboration among roles that are assigned to users. KODMA provides a network infrastructure for agents. Agents in KODAMA have their own community, and represent the communities. Communities have a hierarchy structure by agents residing in other agent's communities. Agents have message filtering policy, and refuse messages that are against the policy. By unifying VPC and KODAMA, a new framework that enables services to define roles and their behavior and to manage logical relationship among communities is provided. VPC on KODAMA enables users to use peer-to-peer services and appliances seamlessly with their mobile devices.