The votive sword passed down through generations of Fuuma Clan heads, which Kotarou carries in a crystal sphere marked "sword" (like he does the spirit-beasts). Its name means "Storm-Beheader".

Formally known as the Tosa Red Whales. An organization of possessor spirits formed around a core of Ichiryou Gusoku (farmer-samurai) fighting to expel 'invaders' from Tosa and gain control of Shikoku.

Led by Kusama Seibee (head) and Kada Reijirou (deputy).

Others include:

- Iwata Eikichi, a member of the leadership circle
- Nakagawa Kamon, a doctor and Kusama's longtime friend
- Hikawa Samanosuke, a capable fighter and captain
- Akutagawa Chikamune, strategist and former direct vassal to the Chousokabe clan
- Doumori Inosuke, an ace fighter
- Hyoudou Hayato, head of the Muroto group
- Higaki Kogenta, head of the Ashizuri group
- Yoshimura, a bully with his own posse
- Maki, a member of the intelligence unit

Literally: "spirit-wave synchronization" or spirit-energy synchronization, a difficult technique which can be performed only by those with especially high-level spiritual powers. It allows one person to share the vision of another, and uses the mantra Naubou bagyabatei... Of the Yasha-shuu, only Kagetora and Nagahide are capable of this.

Kagetora can also synchronize with other divine servants of Bishamonten, such as the Gohou Douji, allowing him to control their movement and see through their eyes.

Lit.: "power of spiritual waves; one of the two types of spiritual abilities of the Yasha-shuu which influences the consciousness, mind, and soul of a target. Choubukuryoku is a high-level form of this ability.

Lit.: "Joined platforms method": two rituals performed at the same time in counterpoint to each other. Performing the goma-dan rituals of Gouzanze Myouou-hou and Daiitoku Myouou-hou together is one example.

An old unit of measurement used in China and Japan which is approximately 3.9 km or 2.44 miles.

Rinnou Temple is a Tendai Buddhist complex located in Nikkou, Tochigi Prefecture. It was founded by in 766 by Holy Priest Shoudou and became an attractive retreat for those seeking solitude due to its location deep in the mountains of Japan.

In 1590, during the Siege of Odawara, Toyotomi Hideyoshi seized the temple for supporting the Houjou side, causing its decline. However, during the Tokugawa Shogunate Tenkai became the chief priest of the temple and began its revival.

Many structures and artifacts within the temple are designated National Treasures or Important Cultural Properties. One of the most famous is its main building, Sanbutsudou (三仏堂) or Three Buddha Hall, so-named because it houses large gold lacquered wooden statues of Amida, Senju-Kannon ("Kannon with a thousand arms") and Bato-Kannon ("Kannon with a horse head"). The three deities are regarded as Buddhist manifestations of the three mountain deities of Nikkou enshrined at Futarasan Shrine.

The Black Gate, which is uniformly black from its pillars to its roof tiles, guards the entrance to both Sanbutsudou and the Treasure House.

The Kaizandou, or Founder's Hall, enshrines Shoudou and is located to the north of Toushou Shrine.

Also known as: Roku Dou Kai (六道界), Roku Dou (六道)

Lit. "Six Path Worlds" or just "Six Paths"; a Buddhist belief stemming from Hinduism which says that all beings are trapped within a cycle of life and death and are born into one of six realms until they are enlightened and can break free from the cycle. The six realms are: Jigoku Dou, Gaki Dou, Chikushou Dou, Ashura Dou, Nin Dou, and Ten Dou.

The Rokumeikan was a large two-story building commissioned by Foreign Minister Inoue Kaoru for the housing of foreign guests in Tokyo, designed by Western architect Josiah Conder and completed in 1883. Its purpose was to impress Western visitors, and it became famous for its elaborate banquets and balls, with Japanese gentlemen and ladies in European evening wear dancing Western-style dances such as the waltz and quadrille.

A district located in Minato Ward, Tokyo, popular among business people and for its nightlife.

Lit.: "Dragon-King Mountain", so named as a prayer to the gods for rain (the Dragon King is the god of rain). Located near Tenri City in Nara, Mt. Ryouuou is home to the Chougaku Temple and at one time the Ryuuouzan Castle.