Tenkai Knights Season 1 Episode 12 Dragon's Key

The gang splits into two groups, Guren and Chooki try to find a clew about the White Dragon Key. They find a sign which takes them to another and another (at one of these signs they spot Gen). They finally arrive at the Key and have to go through booby traps. Guren finally gets through and takes the key. Meanwhile Toxsa and Ceylan are fighting such a hard battle they have to go Titan mode. They seem to be holding the Corrupted off but more keep coming. Suddenly Dromus shows up in the end and says that everything is going according to his plan.