Story:
Bakuman(バクマン) is a Japanese shōnen manga written by Tsugumi Ohba and illustrated by Takeshi Obata, the same creative team responsible for Death Note . The series follows talented artist Moritaka Mashiro and aspiring writer Akito Takagi, two ninth grade boys who dreams to be in the manga business; manga artist and writer respectively.

Manga:
20 Volumes; published in Japan by Shueisha, Viz Media in the North America and Madman Entertainment in Australia.

Anime: (There are three seasons currently.)
A 25-episodes per season anime television series based on the manga.

Source:Wikipedia