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[[caption-width-right:300:The Devil went down to... [[TokyoIsTheCenterOfTheUniverse Tokyo?!]]]]
High school student Miu Sakurai has the toughest luck. She's much [[OlderThanTheyLook older than she looks]] and has the biggest crush on Shion Amamiya, the resident hottie, so she believes that her underdeveloped physique keeps her from being noticed by him. She decides to try getting him by other methods... like BlackMagic. Sure, maybe reading the old spellbook she found in a book-store will work, she has nothing to lose anyway.

The thing is, the spell was actually a DealWithTheDevil, and Miu ends up summoning ''{{Satan}} himself''. Much to her surprise, Satan turns out to be... much less ugly than you'd think, since he has the looks of a TallDarkAndHandsome guy alongside [[TallDarkAndSnarky a mean]] [[HandsomeLech and perverted streak]]. Miu tells him her woes, he agrees to help her get Amamiya's heart... but demands the girl's ''virginity'' as the price. Miu gets scared and tries to resist, and there's how she is a UsefulNotes/JapaneseChristian causes weird effects around them. Satan is intrigued and amused, so he starts stalking Miu under the guise of being her older brother Kai and brainwashing everyone into recognizing him as such, but there are a few surprises around in store for ''both'' Satan and Miu...

The first famous manga by Creator/MayuShinjo, ''Akuma na Eros'' is just as HotterAndSexier as her average stories, has plenty of bishonen and {{Bastard Boyfriend}}s, and some supernatural touches. A little bit of everything, you could say.

!!Some tropes you'll find here...

%%* AllGirlsWantBadBoys: Miu's taste in men is... special.
* BastardBoyfriend: None other than the Devil himself.
* BettyAndVeronica: One of the most extreme examples of this trope, as the Veronica is ''Satan himself'' and the Betty turns out to be [[spoiler:a powerful angel]].
%%* CorruptTheCutie: Mmmmmm, yeah.
%%* ClingyJealousGirl: Sarah
* CreepyRavens: Satan has one named Malpha, and he turns it into a cute little boy named Tsubasa. Miu's reaction is to drop Malpha onto the floor in shock.
%%* DealWithTheDevil: Among the weirdest ones ever.
* EvilIsSexy: In-universe example, as Satan's super-hot looks start to make Miu question her feelings toward Amamiya.
* FakeMemories: Satan implants those in the people around him (including the Sakurai parents), making them believe that he and the humanised Marpha are Miu's brothers and that they have been around since forever.
* JustAKid: Miu does ''not'' like to be seen as such.
* MarkOfTheBeast: Miu has one on the back of her shoulder
%%* NiceGuy: Amamiya.
* PickyEater: Miu doesn't like milk and fish.
* OlderThanTheyLook: Miu's biggest problem.
-->''Miu''' (while praying in the chapel): Even if I don't like it, I'll have milk and fish, at least to not get mistaken by a primary school kid... And please, if you can, ''change this child-like face.''
%%* {{Shoujo}}
* TogetherInDeath: Sorta. [[spoiler:Miu is killed by Sarah]], but that is what allows her to fully [[spoiler:become Satan's bride, and so she becomes his wife and rules Hell with him]].
* TomatoInTheMirror: Amamiya turns out to actually [[spoiler:be ''the Archangel Michael'', as well as Satan's rival for Miu's affection]].
%%* UnholyMatrimony
%%* ZettaiRyouiki: Miu's school uniform