Jiro Kusano (草野 次郎, Kusano Jirō), commonly known as Roji (ロージー, Rōjī, Ji-ro said backwards), is a main character of Muhyo & Roji's Bureau of Supernatural Investigation. He is a Magic Law practitioner, and, at the start of the manga, is a Second Clerk. He is Muhyo's assistant.
Roji is a young slim man with blond hair with brown-orange eyes.
Roji is optimistic and always tries to see the good in people. He can be a bit of a whiner and crybaby, which annoys Muhyo. He constantly tries to make up for his weak Magic Law abilities by studying, and always tries to help Muhyo as much as he can. Roji is skilled in making disguises, which he calls "Super Fab Tech". These include a dresser that he hides inside and pots that he and Muhyo use as disguises. Like Muhyo, he also enjoys reading Jabin. In truth, Roji is a very kind, sensitive person, and he is the one who takes a lot of risks when it comes to protecting Muhyo and therefore, Roji has a different kind of power which no one has: a kind and unwavering heart.
Jiro, nicknamed Roji, became a magic practitioner in the first place because his friend became possessed. An executor showed up, exorcising the spirit and saving Roji's friend. This set him on the road to becoming Muhyo's assistant. After failing the entrance exam to the practitioner academy, he ventured accidentally into an interview to become Muhyo's assistant. Lured to enter the building because the sign declaring the interview read "No magic law experience needed." He stumbled into the interviewing room by mistake and, after an awkward interview, departed. A few days later, a grudge attacked the hotel where he was staying. Roji seized a staff while in the grudges clutches and his tempering caused the staff to flare and take a fair chunk out of the grudge's side. At this exact moment, Muhyo shows up to sentence the haunt, and asks Roji why he wants to practice magic law.
- He likes tea and sweets and dislikes ghosts and scary Muhyo
- His talent is super fab tech and cooking