Arc 18The Second Honkai Eruption
Sirin became a six-core Herrscher and brought catastrophe to Earth, while Fu Hua, Siegfried, and Cecilia fought to stop her. Their victory ended with Otto ordering a missile strike that killed Cecilia and Sirin, leaving Siegfried alive and K423’s consciousness awakened by Cecilia’s love.
- Anti-Entropy broke away from Schicksal after Welt Joyce and Leanna sacrificed themselves to stop a Honkai Fission Bomb, and the Light Screen revealed Schicksal’s experiments on Sirin.
- The Will of Honkai chose Sirin as the Second Herrscher, and Otto’s betrayal freed her to gather Herrscher Cores and devastate the world.
- Welt Yang confronted Sirin on the moon so Siegfried Kaslana could collect Soul Steel, but Sirin took the Core of Reason and sent pseudo-Herrscher emissaries to attack Schicksal.
- Fu Hua trapped Sirin in an illusion and spared her as part of Otto’s plan, but the Will of Honkai empowered Sirin, forcing Fu Hua to unleash Taixuan Sword God at the cost of her memories and will.
- The Will of Honkai shielded Sirin from Fu Hua’s strike, Cheng Lixue died protecting Fu Hua, and Siegfried used Artificial Collapse to tear the Death Law User Core from Sirin.
- Cecilia used Black Abyss White Flower to purify the Honkai Energy as Siegfried wielded An-Utu, and together they shattered the Core of the Void and ended the Second Honkai Eruption.
- Otto ordered a Honkai Fission Missile launched at Siegfried and Cecilia, and Cecilia embraced Sirin while protecting her and part of Siegfried’s surroundings.
- The missile killed Cecilia and Sirin, leaving Siegfried alive in a crater, while the Light Screen revealed that Cecilia’s maternal love had awakened K423’s consciousness and purified Sirin’s hatred.