Arc 23Otto’s Devotion and Kallen’s Stand
Kiana defeats the Thousand Herrschers as the Light Screen reveals how Otto’s devotion to Kallen drove him from a would-be inventor to forbidden experiments, unintended salvation, and desperate schemes. After Otto shields Kallen from Immortal Chi Yuan, he and Kallen take in an orphan named Vera, while the observers recognize that Otto’s attention remains fixed on Kallen.
- Kallen invites Otto to become her partner in saving the world, and the observers later connect that promise to the course of his life.
- Kiana rejects the Thousand Herrschers’ plan for a world without suffering and destroys it with her Flamescion fire.
- After Kallen’s father dies, Otto tries to revive him with a copy of Black Abyss White Flower, but Kallen condemns the forbidden attempt and leaves him in despair.
- As the Black Death spreads, Otto conducts lethal experiments and develops a medicine that saves civilians, while Kallen is sentenced to death for heresy.
- Eleanor Schariac orders Collapse Beasts released against Da Ming’s army, but Immortal Chi Yuan destroys them and defeats Kallen.
- Otto steps between Kallen and Immortal Chi Yuan, who heals Kallen and leaves after judging Schicksal’s sins rather than Otto’s devotion.
- Kallen asks Otto to take a surviving orphan with them, and they name the girl Vera, though the observers conclude Otto is focused on winning Kallen’s favor rather than caring for Vera.