Uncle and martial arts teacher to Gennosuke, whom he trains to use his Dojutsu Eye Technique. He was slain by Koshirou in episode 18. He's the seventh out of theKouga's 10 representative to die and also the thirteen out of all 20 ninja to die.
Muroga Hyouma was chosen as one of ten ninja to represent the Koga Manjidani clan in their duel against the chosen ten of the rival Iga Tsubagakure clan.
As the second in command to Lord Kouga Danjo, Hyouma was assigned to be the sensei of Danjou's grandson Gennosuke, who was also his nephew since Gennosuke's deceased mother was Hyoma's older sister. Over the years, Hyouma successfully taught his pupil to call upon the Dojutsu technique in their bloodline as well as how to rely on other senses besides sight. Unlike Gennosuke, Hyouma's Dojutsu is always in effect so he must keep his eyes shut or else risk accidentally killing the wrong person at the wrong time. To compensate, Hyouma develops an almost radar-like sense of hearing that makes it impossible for him to be snuck up on.
Hyouma's most important lesson however was when he revealed to Gennosuke the truth of the world; that despite whatever differences may exist between people, they are still humans who live, feel, and die the same way. It was due to Hyouma's teachings that Gennosuke was able to see past his clan's hatred for the Iga and seek a harmonious coexistence until the blood shed following the dissolval of the Hattori truce called for a decisive end to the conflict by one way or another.
Hyouma is cautious and intuitive, and following a surprise attack on Manjidani is the first member of the Koga ten to realize that the Hattori truce may have been absolved. Although he distrusts the Iga, Hyouma admires Gennosuke's efforts to establish peace between the two clans and supports him whole heartedly regardless of what personal cost he may endure.