I totally love this episode. This is by far, in my opinion, the best episode I've seen. This episode is better than any Naruto episode, better than most of the Full Metal Alchemist episode, and better than any Ghost in the Shell episodes. I just totally love this episode.
The episode is just shows the fight between Kazuma and Mujyo and the fight between Ryuho and the crystallized form. At first Kazuma and Ryuho were losing but in the end they were able to summon their most powerful form. Ryuho and Kazuma both transformed into their armor mode. Kazuma totally kicked Mujyo ass which is good because I hate Mujyo, and Ryuho was finally able to take revenge on the thing that killed his mom. We also see Cougar save Kanami.
This episode is amazing and everybody should watch it.