History Fridge / TheDevilIsAPartTimer

* In Episode 7, [[spoiler: Lucifer finds Emi's bottle of Holy Vitamin B and jokes that if she keeps drinking stuff like that, she might get a heatstroke like Ashiya. Except, he knew what the bottle actually contained and Alciel had too much of it, thanks to Suzuno. It was a hint that they already knew who Suzuno was.]]
** [[spoiler: And because Lucifer knew what it contained, how else could have Olba known about it?]]

* Following defeating Lucifer and saving the citizenry of Tokyo, the heroes' attention is drawn to Olba, buried under the rubble he caused to fall. One of them mentions that the police will identify him as participating in a robbery and arrest him soon. However, why didn't they take into account that he or Lucifer could have used magic to disguise themselves, considering they had seen both use magic? This comes back to bite them in the ass later when [[spoiler:not only does Olba not get arrested, he returns to cause more trouble by assisting Sariel]].
** Even worse in the Light Novels as [[spoiler:Olba escapes back to Ente Isla and is one of the main villains of the later Light Novels, stirring up trouble in the demon realms and with The Azure Emperor.]]

* In episode 6 Mao and co go to an old school building that is apparently a supernatural hotspot, thinking that it might have a link to Ente Isla. Chiho explains that it was closed because several students vanished there without a trace, as if spirited away. [[spoiler: Lucifer]] explains that places where Gates have opened in the past are often subject to supernatural phenomena. If they're right and a Gate did open there, then the missing students were likely pulled to Ente Isla or some other parallel dimension and never found a way to come back.

** [[spoiler: In the light novels, he made it back to Enta Isla and set about causing a civil war in the demon world.]]

* In LN#4, Maou and gang go to a beach shop run by Amane Ooguro. A laid back woman, at one point she warns/teases Maou not to think about flirting with any of her scantily clad female customers. Later though, it turns out [[spoiler:Amane is an aspect of Binah, a spirit protector of the Earth, and runs Ooguro-ya as a sort of SpiritedAway halfway house for human spirits. She's not only warning Maou not to chase after the young women that come to her store because of RuleOfFunny but because the customers are spirits and technically dead people.]]

* In LN#4, Maou and gang to to a beach shop run by Amane Ooguro. A laid back woman, at one point she warns/teases Maou not to think about flirting with any of her scantily clad female customers. Later though, it turns out [[spoiler:Amane is an aspect of Binah, a spirit protector of the Earth, and runs Ooguro-ya as a sort of SpiritedAway halfway house for human spirits. She's not only warning Maou not to chase after the young women that come to her store because of RuleOfFunny but because the customers are spirits and technically dead people.]]

* In LN#4, Maou and gang to to a beach shop run by Amane Ooguro. A laid back woman, at one point she warns/teases Maou not to think about flirting with any of her scantily clad female customers. Later though, it turns out [[spoiler:Amane is an aspect of Binah, a spirit protector of the Earth, and runs Ooguro-ya as a sort of SpiritedAway halfway house for human spirits. She's not only teasing Maou not to chase after the young women that come to her store because of RuleOfFunny but because the customers are spirits and technically dead people.]]

* Did the owner of the scam company in episode 13 look weird to anyone? Considering his method of dress, the smoking, and how he wanted to "take it outside" when Maou tried to argue with him...that business may have very well been a business front for the Yakuza.

* Mao's plan to "rule the world" via job climbing at [=MgRonald's=] seems funny; until you realize; there have been business tycoons who started from the ground up. Part-time employee, full-time employee, manager, corporate executive, management vice-president, management president, corporate executive officer, chairman of the Board. And this is just business; by the time he gets to that level, he'll have learned how Earth society, politics and military works. Maou is an exception to only HumansAdvanceSwiftly; he's LongLived, he's patient. Give him a century or two to himself, and he really would be a rising power on Earth. (Look at ComicBook/VandalSavage!)

* [[WhatHappenedToTheMouse What happened to Olba following the events of episode 12?]] If the LawOfOffscreenInertia is in place he might ''have starved to death atop a building'', with no one to find him for a very long time.

* [[WhatHappenedToTheMouse What happened to Olba following the events of episode 12?]] If TheLawOfOffscreenInertia is in place he might ''have starved to death atop a building'', with no one to find him for a very long time.

* Mao's plan to "rule the world" via job climbing at [=MgRonald's=] seems funny; until you realize; there have been business tycoons who started from the ground up. Part-time employee, full-time employee, manager, corporate executive, management vice-president, management president, corporate executive officer, chairman of the Board. And this is just business; by the time he gets to that level, he'll have learned how Earth society, politics and military works. Maou is an exception to only HumansAdvanceSwiftly; he's LongLived, he's patient. Give him a century or two to himself, and he really would be a rising Power on Earth. (Look at VandalSavage!)

*** School officials likely wouldn't close the building down if the missing students had turned up unharmed somewhere. In other words, a group of kids wound up in the middle of a TrappedInAnotherWorld adventure in Ente Isla, but ''they never came back'' and never got to see their loved ones on earth again.