About “Muhyo & Roji's Bureau of Supernatural Investigation”
Muhyo & Roji's Bureau of Supernatural Investigation is a Japanese manga series written and illustrated by Yoshiyuki Nishi. It ran in Shueisha's shōnen manga magazine Weekly Shōnen Jump from November 2004 to March 2008, collected in 18 tankōbon volumes. It follows Toru Muhyo and his assistant Jiro "Roji" Kusano, a young magical law enforcer and his aide who track down and punish spirits based on the articles of the book of magical law. (Summary adapted from Wikipedia, CC BY-SA 4.0.)
Some summaries adapted from Wikipedia, CC BY-SA 4.0.