Infinite Ryvius: Volume 2 - Vital Guarder

In the year 2225 AD, an act of sabotage has destroyed the Liebe Delta Astronaut Training Center and has stranded 487 teenage cadets aboard the Ryvius, a mysterious interstellar spaceship that was hidden inside the Liebe Delta.

As the cadets settle aboard the Ryvius, their situation continues to fray. The balance of command has shifted as Airs Blue and his team stages a coup to take control of the bridge. The Control unit of a giant robot called the Vital Guarder is discovered and several top cadets, including Yuki Aiba and Ikumi Oze, are ordered to train to use it. An attack by the Orbital Security Bureau forces the Ryvius to seek refuge in the Sea of Geduld and drift to Mars. Upon reaching Mars, the Ryvius is attacked by Mars security forces and is forced to protect itself by deploying the Vital Guarder. In the middle of battle, contact is lost with the Vital Guarder. Did Yuki and Ikumi desert everyone else aboard the Ryvius?

Episodes:

6. My Moment
7. The Changing Times
8. We Didn't Know Anything
9. Vital Guarder
10. Even If You Can't Believe