tbh, the PV is as spoilerific as this thread is.
And I so didn't make a mistake with hakua's hair colour, it was always like that, it didn't like change for the anime or anything. I totally did not get confused again and made another mistake, no sir!
*cough*
I was a bit surprised that they didn't up the fanservice for the PV, considering how it usually done with previews for harem-like shows.