*Like the Byakko seishi, this won't have that much information. It will have their powers though. XD
Genbu
Genbu the Beast God of the North, Hokkan, Earth, and Strategic Warfare. He was the first God summoned. He is symbolized with a turtle and snake.
Takiko Okuda
Priestess of Genbu and the first person from our world to travel to the book world. Her father, Einosuke Okuda, was the one who translated the book into Japanese, since it was originally in Chinese. Her first wish was to protect Hokkan for all eternity. Her second was to return home. After returning home, she was wracked with pain because Genbu was devouring her from the inside. Realizing this, Einosuke killed her to end her pain, then killed himself. I'm still not sure whether her lover was Tomite or Uruki. It could have been both. o.O She has a Japanese Naginai that she fights with. (A scythe-like weapon)
Yui Hongo
Second Priestess of Genbu. Yui became the second one after Tenkou drew her back into the book. The two seishi who are with her are Urumiya and Hatsui. However, you don't get to see what their powers are like since Chichiri knocks them out so Nakago won't kill them. Her three wishes are to seal Tenkou away, return Takiko Okuda to the material world, and to seal the Universe of Four Gods Sky and Earth forever.
Uruki
Name in Anime: Roun Rimudo
Age: 16
Power: Only appears when he's in his girl form. Wind/blizzard related.
Seishi Symbol: Woman
Additional Info: Uruki is the first Genbu seishi Takiko meets when she enters the book world. He is a bandit wanted by the government since he has killed over 1000 people. He first meets Takiko in his girl form, chained to a tree. Uruki has a friend named Soruen who knows about his identity as a Genbu seishi, along with his real identity. At his birth, there was a prophecy that when the Priestess of Genbu opened the Book, he would kill his father, the king of Hokkan. Thus, to save her son, Uruki's mother gave him to
Tomite
Name in Anime: Chamuka Tan
Age: 17
Power: Can shoot ice arrows (or knives from his hand) and has a ring that can create a ring of green light that tightens around his opponent's body and has the ability to slice him in half.
Seishi Symbol: Emptiness
Constellation: Sagittarius
Additional Info: Tomite is one of the four Genbu seishi in the show. He guards the Genbu Shinzaho with Hikitsu, another one of the Genbu Seven. After Miaka receives the Shinzaho, he and Hikitsu return to the afterlife. He was one of the first of the Genbu seishi to be killed, which is why he offered to protect the Shinzaho. In the beginning, he wants to kill Uruki for reward money since his family's extremely poor. However, he discovers that Rimudo is one of the Genbu Seven. Tomite likes to "bully" Hatsui.
Hikitsu
Name in Anime: Chen Emato
Power: Ice snakes (manipulating ice)
Age: 21
Seishi Symbol: Ladle
Constellation: Aquarius
Additional Info: Hikitsu is the other Genbu seishi who guards the Shinzaho. He is more reserved than Tomite. Along with Tomite, he was one of the first Genbu seishi to be killed. He and Tomite are both ghosts. He has an eye-patch because his sign is literally on his eye. Hikitsu is one of the seishi Tomite mentions in Book Two of Genbu Kaiden, who disappeared into the forest a year before Takiko arrived.
Urumiya
Age: 14
Power: Singing (Can be both annoying and helpful. Kind of like Amiboshi.)
Seishi Symbol: Roof top
Constellation: Aquarius
Additional Info: Urumiya is one of the four seishi who appear in the series. He looks like a mini-Hikitsu in the anime, but instead of wearing blue, he's dressed in purple. Also, he doesn't have the eye-patch. He has yet to appear in the manga.
Hatsui
Name in Anime: Zaraa
Age: 12 (I'm not sure about this, but this is how old he looks)
Power: Ability to shoot needles from his body
Seishi Symbol: Room
Constellation: Pegasus
Additional Info: Hatsui is the other Genbu seishi who appears when Yui is the Priestess of Genbu. He is the third seishi that Takiko finds. Three years ago, he fled his hometown because he had accidentally killed so many people with the needles from his body. After a year, he found refuge with a woman named Phen, who turned out to be an assassin hired by Rimudo's father to kill him. (Rimudo) Hatsui at times is a crybaby, but his knowledge of herbs often helps the other seishi.