In 1972, the Apollo 17 mission discovered a hypergate to Mars on the surface of the moon. Soon a war breaks out between Earth and Mars, and Martian soldiers begin to descend from the sky, riding steel giants, intent on exterminating humanity.
CUE!
Maoyu: Archenemy & Hero
Planetarian: The Reverie of a Little Planet
Re:Creators
Gonna be the Twin-Tail!!
The Hill Dyed Rose Madder
Yuyushiki
Nagi-Asu: A Lull in the Sea
11eyes
Rotten
Mobile Suit Gundam: The Witch from Mercury
Durarara!!
Ben-To
B: The Beginning
O Maidens in Your Savage Season
Treadstone
Code Geass: Lelouch of the Rebellion
Hatfields & McCoys
Death Parade
Arifureta: From Commonplace to World's Strongest