After Constant Baron-0 left, Jacob started to study the wisdom tomes she had given him. They contained all kinds of knowledge about many alchemy professions, and the minimum rank among them was Fable Alchemist. There were also four King Alchemist's knowledge and many formulas, blueprints, and recipes.
However, after a few hours, Jacob grimaced because there was no clue about the Vitality Architect. One of the reasons he took the risk of letting Constant Baron-0 free was that he wanted information about the Vitality Architect profession.
'Just what is this Vitality Architect? It's either an extremely secretive profession like the Soulmancer, or it might not even exist in the Middle Plains. It's also possible that Constant Baron-0 didn't give me the information, or it simply didn't fall into the category of alchemy profession at all.