Pill King?

Davis, the Solitary Soul Avatar to be exact, stayed in the Soul Palace's Library and absorbed all types of knowledge in a prioritized manner. He went for Alchemy first, devouring the knowledge of hundreds and thousands of ingredients, their characteristics, features, life cycle, and many more.

Furthermore, it was said that the Alchemy Records here were far more perfect than the Thousand Pill Palace or even the Glorious Pill Palace, a Mid-Sized Territory that controls most of the pill market of the Fifty-Two Territories. However, the Glorious Pill Palace collectively possessed more pill recipes and raw ingredient resources than any power combined since it was their main business and reason for existence in the Fifty-Two Territories.