Even if you didn't know about the novels, like this anon who was an anime-only fag until I got spoiled during the bitching following 24, you would have to admit the second season sucked shit.
I didn't watch Shana for shitty homerwork sessions and bullshit idealized Japanese school melodrama love triangles. I came for a badass loli who ripped the shit out of fashionable men and women with flashy, interesting powers. I also came for non-stop action and some twisted form of romance between a loveable dead guy and said badass loli. I also came for balrogs, meidos's, Mamiko Noto and awesome animation.
Very little of that went into this season (except the Noto stuff, fine fapping that) and what we did see was punctuated by the shitty harem scenes - everything else was rushed, poorly explained and just plain gay.
Season 2 was fail. Knowing about Darth Yuuji just makes it epic fail.