This show has a lot of characters, but it goes in depth with why they are there and how they got there. This series has a few ideas to pick up. One is the idea of destiny and whether you can control it or alter it. The characters have a wide variety from an innocent and loving girl to complete psychopaths. But each and every character has a story that is told (whether in the first series or not). This anime has a lot of fan service in and out of its fight scenes (some have the purpose of showing how determined the characters toshowing how "Girly" they are). This show has a mix of school life, fight scenes, strong vs. weak, how people change, repetition of history, and of the likelihood to change your destiny.