Review of Shakugan no Shana: Season I
It's a decent series however there is a ton of emotional and time filler. First the good points however and then the filler issue. The animation is really nice and the story is reasonably unique. The character design can be summed up as either really good or direly lacking depending on the character in question. The story doesn't move too slow, it's mainly a filler issue. The story has depth though it's not as structured as some others. There is no overwhelming sense of the ultimate structure of the fictional universe...it's more of a perspective of seeing the box from within the box then being ableto view the box from the outside perspective. It could have used more storyline relating to I suppose the "higher-ups" as it lacks a sense of origins for the main female protagonist. There are others who fill the role but it's feels like okay, got some good guys and some baddies...but no firm sense of ultimate agendas.
I found myself skipping through episodes (4-20 second intervals) towards the end of the series as I was losing my patience waiting for something to actually happen. Watching scenery slowly scroll by and characters being lost in their emotions gets tiring when it's present in half of all the episodes.
The series is fair though if they removed the overly emotional content and the fillers like scrolling slowly past scenery it would have been significantly more enjoyable overall. If you've got the extra time and don't mind the filler you may enjoy the series more however.