Set in the near future, on an Earth forever changed by a catastrophe caused by an axial anomaly.
The story takes place in Tatsuminato City, a colossal artificial island renowned as the finest paradise city in the Southern Hemisphere since the disaster.
Discarded in a junk heap in the city’s slums lies Asura, an unidentified humanoid combat weapon equipped with artificial intelligence.
After being repaired by Yuri, a girl who lives in the slums, Asura decides to enter "Strike Gigants", Tatsuminato City’s greatest form of entertainment: a robot battle royale.
All so that Yuri may attain the happiness she longs for.