Gundam Build Divers season 1 episode 15
Episode title: Lotus Challenge
The Lotus Challenge is an almost unbeatable created mission in which you must conquer the impregnable Lotus Fortress within a certain period of time. Even the champion's Force Avalon has failed to overcome this obstacle, but now that they have the Gundam 00 Sky, Riku and the other Build Divers are determined to attempt the challenge.
