Sophia Monad.

Sophia Monad is the daughter of Isabelle Monad and the leader of the Alchemists, Valentinus Monad. The Monad family holds a prestigious and influential position in Krat's history. Sophia possesses a unique ability inherited from her mother, known as the "Listener" ability, which allows her to hear Ergo and communicate with puppets. However, she had to keep this ability hidden, as her mother resented the ability and viewed it as the "devil's power."

Sophia became involved in her family's endeavors, including the Monad Charity House, an orphanage transformed into a boarding school. Here, she crossed paths with Carlo, the son of the renowned inventor Giuseppe Geppetto, and introduced him to a boy named Romeo. Additionally, Sophia forged a strong friendship with a reporter named Medoro. Sophia later unearthed the truth about Ergo, realizing it was the purified essence of life trapped by the Petrification Disease, which froze both the time and body of the afflicted and turned them to stone. Leveraging her Listener ability, Sophia harnessed Ergo's power to manipulate time, but this revelation led to dire consequences.

Following her father's passing, his trusted aide, Simon Manus, discovered Sophia's unique power and sought to exploit it for his ambitions of godhood. He imprisoned Sophia at Arche Abbey and constructed a machine to harness her power, resulting in the widespread outbreak of the Petrification Disease. Sophia's prolonged exposure to the machine mutated her, rendering her immobile and in intense pain. Her suffering caused her soul to split into fragments, allowing her to project herself across Krat and empower Stargazers with her abilities.