Zuoda, Akuma no Sentaku

In a Akerius ruin on Stravaze, Gatlantis Emperor Zwordar explains how he will force Kodai to choose the mass lives of the civilians, or Mori Yuki, his love. The artificial body detonates, but Hajime Saito, one of the Cosmo Marines, saves Kodai from the explosion. Kodai is torn between which ship to save, and which to sacrifice. Yuki offers herself as sacrifice. The Yamato uses the Wave Motion Gun and collapses the rift, saving all lives.