World Lore

The Three Worlds[edit]

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In the Obey Me! universe, there are three main locations: the Devildom, the Celestial Realm, and the Human World. They are commonly referred to as simply "the three worlds."

Universe's Time Setting[edit]

The exact time period that Obey Me! takes place in is never specifically mentioned, though there are some references to time that can be used as guidelines. For example, in Lesson 1-13 (OM), Leviathan mentioned that The Tale of the Seven Lords had a theatrical version released in 2015. This likely means that MC first became an exchange student in the Devildom in 2016 at the earliest, though the time could also be much further into the future than that.

The time period for the beginning of Nightbringer is also not specifically mentioned, though if MC asks Asmodeus in Lesson 1-14 (NB) how long the brothers have been in the Devildom, he replies "since the end of the Great Celestial War," which he adds was "maybe a year [ago]." This point in time is at least several thousand years earlier than MC's original arrival as a RAD exchange student, given Satan's age and his creation being after the Great Celestial War.

The Brothers' Ages and Birth Order[edit]

As the seven brothers were once angels and are now demons, they have a much longer lifespan than humans do. They are known to be at least several thousand years old, as Asmodeus commented in Lesson 5-14 (OM) that "[his] memory goes back at least 5,000 years." Mammon also claimed in Lesson 11 (OM) to be well over 5,000 years old. While Lucifer did angrily say in the Devilgram Healing Lucifer that MC shouldn't treat him like "[he's] not ten million years older than [them]," the context seems to imply he was being hyperbolic.

Satan is actually the youngest of the seven brothers, as he was not created until after the Great Celestial War. He is at least a few thousand years old, however, as in the Pop Quiz Let the Games Begin!, Satan commented that he and his brothers had not lied down together in the same room for "at least a few thousand years." In Lesson 9-7 (OM), he explained his rank of "fourth-born" was given to him by the Demon King just like the rest of his brothers. These ranks are based on each brother's relative power when compared to his siblings. In Issue 3 of the RAD Newspaper, Satan was confirmed to be older than Luke.

Although Beelzebub has the rank of "sixth-born" and Belphegor is "seventh-born," the two are actually the same age. According to Beelzebub in Lesson 5-4 (OM), he and Belphegor were created by their Father at the same time, which is why they are considered twins. In the Devilgram Unspoken Feelings, Beelzebub suggested that they're both technically the youngest brother. However, Belphegor said that Beelzebub was created just a tiny bit before he was, thus making him older.