OVA
Description
**Ryoma**, renowned as "Dokugan Ryu" (One-Eyed Dragon), stands as a prominent ninja of the Fuma Clan. A past battle cost him one eye, leaving a visible scar and his signature eyepatch. His combat-ready physique bears a noted resemblance to Shiryu from Saint Seiya.

Calm and intelligent, Ryoma serves as the clan’s strategist. He demonstrates natural leadership, notably commanding Fuma forces and making tactical decisions during the war against the Yasha Clan. Though outwardly stoic and bound by "Shinobi Law," interactions with Ranko Yagyu reveal his gradual acknowledgment of humanity beyond being a weapon.

His background reflects long service to the Fuma Clan. In the Yasha Chapter, he first intervenes to rescue Kojiro from Musashi Asuka. Later, alongside Ryuho and Kou, he saves Kojiro again from Yasha Generals, executing a strategic retreat while leaving Kou to face an enemy. As conflict escalates, he assumes leadership at Hakuo Academy, witnessing Rinpyo’s death and Byakko’s infiltration – an event culminating in Shoryu killing Byakko. He formally accepts Musashi Asuka’s written challenge, cementing their rivalry.

The Sacred Sword War Chapter sees Ryoma return to a destroyed Fuma village and slaughtered clan members. This catastrophe drives him onto a solitary quest for vengeance against those responsible, separating from his comrades.

During the Fuma Rebellion Chapter, he returns after a three-month absence. Alongside Kojiro, he confronts the violent internal coup led by the "Shinsei Fuma Clan" (New Fuma Clan). He engages in direct combat against former clansmen, including the powerful Muma, the bandaged Raizou, and Shimon, wielder of dangerous mind-control abilities.

Classified as a "Psychic Warrior" (サイキック・ソルジャー), Ryoma wields extraordinary extrasensory powers. His combat skills encompass advanced ninjutsu mastery, physical prowess rivaling Musashi Asuka, and significant sword proficiency as a Cosmo Warrior. His notable technique, the Fuma Shikyoken, is showcased with elaborate visual effects.