If I want to watch Kiss x Sis, do I watch the OVAs first or the series first?
Watch the TV series first. It is enjoyable but definitely not as good as the OVAs. You're likely to be more disappointed the other way around.
I don't think it matters. I've only ever watched the OVAs and read the manga though
Has any group put out a batch of the OVAs?
Why don't you just masturbate to regular porn instead of wasting your time on fanservice anime.
I thought the series was a terrible romcom, and the OVAs the equivalent of softcore porn.
Series is shit, watch the OVAs.
It's just fap fuel anyways.