I watched this Anime because one of my classmates told me that it was a good anime and that it had some good characters... and he was right. I started the anime and i coulnt stop watching it ; the story was good the characters were funny and good at the same time and the Opening was great. Despite the fact that i dont relly like Mecha animes i relly loved that one.The fighting styles , the guns and the Mechas were great in this anime. I enjoy it a lot and i relly loved it. I recoment you to watch it but ithas some violence and nude... so if you watch it be prepered... it is an 18 + anime after all.