Board Thread:4. General Discussion/@comment-124.83.16.225-20160127164816/@comment-124.83.16.225-20160209170804

Remember Rou's comments on how the power of a being concentrates in their hearts and brains the most. It's possible to learn it from just eating the flesh in general too, but yeah, the probability to absorb is higher depending on the particular body part he consumes.

Items don't have anything like that and Rou hasn't really given a ruling on it. So rather than assuming that there's a delay in absorbing abilities, it seems more logical to assume that he has to eat the whole object to gain any abilities from it according to some unstated rule on his Absorption ability.

And, uh, Rou can instantly digest stuff. Even passively, he does that. He's been doing it even before he became The Gluttony, and the title only made it more severe. There's no problem with digestion. The only real rule is that he has to chew and break up the object or meat in his mouth, otherwise he could have just swallowed the smaller Sacred Treasures whole and sent it straight into his stomach's digestive track.

Also, you made a mistake. He never gradually gained abilities until it was digested. He tasted the divine power contained within them, but he only gained the abilities (and completely assimilated the divine power) after he had completely chewed up and swalloed the Sacred Treasures.