The Adventures of Kotetsu - S01

While walking the streets of Tokyo, Linn Suzuki spots a strange device sticking up from the sidewalk. All at once she is set upon by thugs, and a beautiful stranger comes to her aid and takes them all down. It seems young Linn has fled Deep Kyoto from her cruel mistress and has traveled to Edo, hoping to find her long lost brother, who was last seen working for the Kuon Detective Agency. By chance, the stranger turns out to be Miho Kuon, who lets Linn stay with her, nicknaming her Kotetsu, or Little Tetsu, after her brother, Tetsujin. However, a mysterious agency called the Syndicate is after Miho, and Linn is now in the thick of things.