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there are 5 volumes and it's still ongoing
The anime news network says
Top 10 Most Popular (Top 50)#titleratingnb. votes1Death Note (manga)8.9420392Naruto (manga)8.1716423Bleach (manga)8.3414314Fruits Basket (manga)8.7412535Fullmetal Alchemist (manga)8.8211116Love Hina (manga)8.4011287Rurouni Kenshin (manga)8.839758Berserk (manga)9.279139Chobits (manga)8.01103310One Piece (manga)8.59851
this manga can be read for free at either manga fox, one manga or zen manga :)
http://en.wikipedia.org/wiki/Manga
Manga is from Japan
It is both anime and manga