I'm not much of a manga reader, but when there's a cute demon loli who's also a hawt onee-san in her true form, I'm interested. Turns out she's much more adorable and meme-able than I could have ever imagined, plus she's down right goddess material, if she wasn't 2nd in command of Hell I guess..." So I just have one thing to say really: when this gets an anime, because it needs to one day, the restaurant owner needs to be voiced by Miss Caretaker from Sunohara, her sister (the landlady) needs to be voiced by Fate series' Mordred, and Jahy-sama should be a voice likeone of Rie Kugimiya's or perhaps Senko-san mixed with a dash of Satania. That would be nice...