Project ARMS

Alt. titles: ARMS, アームズ
Genres: Action, Drama, Sci-Fi, Shounen, Supernatural
Year: 1997
Volumes: 22
Author: NANATSUKI Kyoichi
Artist: MINAGAWA Ryoji
Publishers: Shogakukan (originally) & VIZ Media 
Rating (M-U): 8.3 / 10.0 (83 votes)
Groups: Manga-Sketchbook (vol. 01-19) & God Movement Scans (vol. 20-22)
Links: Manga-Updates, ANN
Related on BakaBT: Project Arms TV series

Description

Ryo Takatsuki injured his right arm in an accident years ago. The resulting surgery brought about some unexpected, but not entirely unwelcome changes -- enhanced healing along with the presence of a superweapon dubbed "ARMS" in his body. But with all power comes a price, and with newfound allies who share his predicament, he must battle a secret organization trying to control the ARMS while trying to find the truth behind the weapon in his body for himself...
Source: ANN

In 1999 ARMS received the Shogakukan Manga Award for shōnen.

Story arcs by volume:

[01-03] - The First Revelation
[04-07] - The Second Revelation
[08-10] - The Third Revelation
[11-19] - The Fourth Revelation
[20-22] - The Last Revelation