What a pleasant little surprise! I don't know if this is considered as season 1.5, season 2, some OVA's, or what, but it certainly was worth watching, and you should probably watch season 1 - this - 10 commandments. Not only is it some nice new shenanigans with the characters we love, it also adds more character depth, ties up some loose ends, and foreshadows nicely what is to come. ^^ A quick, enjoyable watch! And that's mostly all I have to say about 4 episodes of content, but for some reason AnimeList wants me to write essays all the time so I guess here is some filler text.:D