Probably more like 3.5 stars, but I'm rounding up. 5 stars for the Kane parts, and 2 for the Tagen parts.
Loved Raven and Kane. Daria and Tagen not so much.
I liked the sci-fi elements of it also, but I'd say the sex scenes, while frequent, were pretty clinical, as opposed to sexy.
I'd love to see further adventures of Raven and Kane!