38 Volumes (Complete)
19 Volumes (Shinsouban)

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From the comments some peeps don't like the series latter. So far i've only read to Vol 6 and its been great since vol 3. If that holds up remains to be seen.
First things first, this is the opinion of a person who is a fan of ecchi series, romance series, comedy series, and other basically shounen-type series. That being said, I think that this series is awesome.
Initially, I had expected this to be just another school-harem-ecchi series, but as it progressed, I realised that it was, but at the same time it was much more. The series seems to me like a fusion between harem-ecchi-romance manga like Love Hina and more shounen-action type manga like Flame of Recca.
Personally, I feel that the series gets better as it progresses, slowly moving beyond simply the school-side of things and delving into the whole magic aspect of the series.
this is a great title if you are into the whole harem genre, otherwise this is a stupid title that has a little too much panties and not enough seriousness. that said i can say that i love it and hope i can figure out how to download the next volume
I have been reading this manga since it came out and I am exahusted of laughing... He did it again, just like with Love Hina! Akamatsu!
At first i thought it was just going to be "another" love hina plot, but , chibi kentaro rocks! XD,
well it sure gives a big plot, of course every girl in the manga wants to rape negi lol
truly amazing! it keeps the reader for wanting more no matter what
Wow!!! it's another masterpiece from AKAMATSU Ken
it started out okay and it slowly grew even better. then, Negi started learning martial arts and everything goes downhill. the series just doesn't have that sparkle as Love Hina did. i just have a problem with how the series is more concerned with showing lotsa pretty girls as well as panty shots.
starts off great but starts getting boring after a while. it just.. loses its sparkle
you have too see it to believed []_[]