In Alternate World, Mammon is the manifestation of greed. The embodiment of all evil thoughts that involve coveting money and otherworldly riches that everyone wanted to get in this world. In a sense, this is a sin that everyone had in their life. Even I are not safe from greed.
So that means the next weapon is the Weapon of the Greed Sin. In the past timeline, the Weapon of Greed didn't appear and is thought to be something that will never appear unless a certain condition has been met. But to think that the reason it didn't appear is that it has been staying inside the body of a Sea Worm of all things. Isn't it just quite ridiculous? There is no such thing such as crazy prerequisite quests needed to complete, you just needed to be lucky to find the Sea Worm who eat the weapon of greed that kept that weapon inside of it.
