I just did and it didn't really show anything aside from some cat scenes, gorgeous scenery and the main girl saying Nyaa. Are you sure you didn't mix up the first PV with the second one?
First PV:
https://www.youtube.com/watch?v=hcnuUOd0LKM
Second PV:
https://www.youtube.com/watch?v=EnE2sYAJaHY
And in case your interested this one is the third:
Third PV:
https://www.youtube.com/watch?v=CfzOUsy-hKI