A Maid must always be beautiful and stronger than anyone else, and respect her Master. The Maid who has all these qualities is called "Ace Maid". And there is a Tournament, a Festival, to select the No.1 Ace Maid in Akihabara.
4 Volumes (Complete)





This is my LIM Dall-Young count around May 2013 when the series started:
Ongoing manga series: 6 (or 5 as Sai:Taker could be canceled or on hiatus)
On Hiatus: 2
Ongoing Light-Novels: 1 (or 2 with a Sai:Taker novelization)
Ongoing Hentai compendiums: 1 (and 3 one shots) - "official porn" WTF ?
Manga that "ended" in 2012: 4 - Lol
and his own wikia(!) from where i got this info. He "only" started 1 "new" series after this which lasted 3 volumes.
Why are people still buying into his trash as the man obviously doesn´t care or sleep and he turned his most popular creation into porn starts after all. At least has bank account is about to explode and his "best" manga Kurokami is frankly just average and far too long. Sure people like Brian Michael Bendis can write 200 pages of comics a month and keep at least a level decent level of quality going but this here is just money printing and his "fans" are the suckers. So about Ace Maid:
One short glance at the beginning and ending reveled it to be the same thing as the rest of him body of work i won´t touch with the most noteworthy aspect being that the series is "cleaner" in terms of content when compared to most of his output but is this really a "positive" or not as it was axed after 4 volumes. I don´t know but i do like the lack of high octane misogyny for once. That said i will still avoid his series and the rest of his work continuously like the plague even if worse exist. Go for Black Lagoon (the anime is even better), Emma and Toukyou Lastochika if you want to read about maids without falling asleep.