"Kahaku VR" is a Digital twin that records the Permanent Exhibitions of the National Museum of Nature and Science using 3DVR technology., it was developed as a public relations activity so that children could visit virtually during the period when going out was restricted due to the declaration of a state of emergency. After the release, the scope of use has been expanded in various ways, and content has been added and updated. In this paper, I report on these as examples. I think it is important that museum exhibition activities be archived using 3DVR technology.