In the story of Sect Master Baek, she encountered the Sloth Devil, but Aldrian discovered something interesting from the memories of Kwon Mira—another member of the Seven Deadly Sins had visited the demon territory not long ago.
That person was Gluttony.
From the memories he obtained from devils he had killed in the past, the Gluttony Devil is known as one of the most powerful members of the Seven Deadly Sins in terms of cultivation stage. This is largely due to his unique cultivation technique, which relies on a law called the Absorption Law—a law that allows those who comprehend it to absorb anything in the world and turn it into their own power.
The Absorption Laws are incredibly rare, and only a few individuals throughout the continent's history have ever comprehended them—most of whom were successors to the title of Gluttony Devil, passed down from one generation to the next.
