In the land of Glengard, the realm's 666th Demon King, Fienalia Glengard Flamveil...is bored. With no challenges to excite her and all of humanity long since subjugated, she's off to find a new world--any world!--to conquer...and it just so happens that Earth is next on the hit list! But when "Ena-sama" meets Kento Sugitani, an aspiring manga artist, it seems she might have found a new hobby more interesting than world domination. What a demon lord to do but enroll in a manga school herself?!
While Ena-sama may have found a new pastime learning to become a manga artist, Kento's life has grown considerably more difficult. Keeping a Demon King preoccupied to distract her from destroying the world is no small chore, after all, and now a "hero" has shown up ready to take his head to get to Glengard's absentee dictator?? Despite his best efforts to keep these mortal enemies apart, it seems that a meeting is inevitable, but is Kento even remotely prepared for what fate has lined up for him next...?