Nora to Oujo to Noraneko Heart 1+2 -5th Anniversary Edition-

How do you install this game? there no ISO or MDF and the update can't work

In order to gain access to these new contents, you need to have either the original game or its anime memorial edition installed first. Then from the Title screen, click [APPEND] to start the new scenario. Also, from [EXTRA] --> [Cat Thinking 100], there're also 6 extra short stories that aren't included in the Append scenario (scroll to the bottom to gain access to them)