At the moment when he saw the item name "Perfect Artificial Soul," even though the item description did not mention it, Wu Chang knew it was an exclusive item Ebert made for Erin.
Erin was Ebert's greatest masterpiece, from the selection of raw materials for each part of her body, the engraving of each alchemy magic circuit, to the creation of the artificial soul.
Ebert poured all his heart, passion, and expectations into Erin, witnessing her growth the entire time.
When he looked back, he realized his feelings for Erin were beyond treating her as a masterpiece; it was more like treating her as his daughter.
Because of this, when he saw Erin's face full of pain in the alchemy device, he would rather give up his greatest dream, even at the risk of being discovered by the church, to forcibly terminate the experiment.
Ebert's last blood-colored will in life was to destroy the ritual at Count Jemaine's Manor, to completely liberate Saintess Erin.
