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Season guide

Onmyou Taisenki: Season 1

52 episodes Premiered Sep 30, 2004 Updated Jul 24, 2026
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Episodes

S1·E1

The Fallen God! The Byakko Kogenta

Sep 30, 2004 · 24 min

Riku Tachibana seems to be an ordinary middle school student with the worries of what club to join. His unique feature is that he makes odd hand gestures, and he does not know what

S1·E2

Attack of the Earth Style

Oct 7, 2004 · 24 min

The news of Yamase's disappearance has reached Chi-ryuu Toujinshi Ujiyama and Yuuma Asuka, who has just defeated a Toujinshi of the Ten-ryuu with his powerful Shikigami, Byakko no

S1·E3

Clash of the Byakko

Oct 14, 2004 · 24 min

Following a lead from his grandpa's notes, Riku goes to Ooiwasai to search for some more In. Soon after, he is attacked by Misasa, a Chi-ryuu Toujinshi, and her Shikigami, Kanro no

S1·E4

Strength of the Sword! Saikaidou Kotetsu

Oct 21, 2004 · 24 min

Following a lead from their new friend, Masaomi, Riku and Kogenta go to the mountain region of Myoureizan in search of the In for "Saikaidou Kotetsu." Along the way, Riku meets a T

S1·E5

Fight Between Dragons and Tigers

Oct 28, 2004 · 24 min

One night, Masaomi explains to Riku about what Toujinshi and Shikigami are, and why the Ten-ryuu and the Chi-ryuu are currently fighting. It seems that the Chi-ryuu is interested i

S1·E6

Dance! Toujinfu

Nov 4, 2004 · 24 min

Kogenta really wants Riku to start training, but Riku doesn't know how to go about it. Then, thanks to some of Rina's books, Riku gets some information on a special area for traini

S1·E7

Invoke! Wave-Cutting Blade

Nov 11, 2004 · 24 min

The Boat Club goes on their first outdoor practice. Riku, though, has an objective to fulfill while on this trip. Using translations of his grandpa's notes, he and Kogenta find a n

S1·E8

Yumma and Souma

Nov 18, 2004 · 24 min

Souma gets frustrated by Mikazuchi, his brother Yuuma, and the Ten-ryuu. So, he decides to run away, but he doesn't have any money. With no place else to go, he heads back to Riku'

S1·E9

The Fighting Heart

Nov 25, 2004 · 24 min

One night, Kogenta decides to teach Riku a new In as proof of their trust towards each other: Hissatsu - Hundred Ghost Obliteration Attack. As described by Kogenta, it focuses all

S1·E10

Battle at the Mysterious Ancient Capital

Dec 2, 2004 · 24 min

Riku's grandpa finally wakes up, and he tells Riku to go to the Ten-ryuu Taihaku Shrine in Kyoto. He eventually finds the Taihaku shrine and meets a young girl who seems to be the

S1·E11

Secret of The Ten-ryū Ruins

Dec 9, 2004 · 24 min

The Chi-ryuu learns that Chihaya has disappeared from his post at the Taihaku shrine. So, Mikazuchi sends Izou and two rookie Chi-ryuu Toujinshi, Shinonome (Shikigami - Hanmou no N

S1·E12

Heaven and Earth Shock, Big Spirits

Dec 16, 2004 · 24 min

While Masaomi and Kibachiyo fight Yakumo and (one of) his Shikigami, Seiryuu no Buryune, Riku and Kogenta battle Yuuma and Rangetsu. When all else fails, Riku decides to use the In

S1·E13

Their Bond

Dec 23, 2004 · 24 min

Kogenta is severely injured after the battle with Yuuma and Rangetsu. Nazuna uses a technique in which Horin heals Kogenta. Riku leaves the Taihaku Shrine with Momo and Rina to giv

S1·E14

Demon Invasion

Jan 6, 2005 · 24 min

Riku gets a note from his grandpa that he has left on a journey. When Riku goes to the destroyed shrine, he finds the site completely rebuilt. Nazuna tells Riku about the moon maga

S1·E15

Escape to the Northeast

Jan 13, 2005 · 24 min

Mizuki wants to be recognized by her fiance, Yuuma, who's too busy tending to the battle-scarred Rangetsu. So, Mizuki teams up with Kanna to enter Fukumaden and find a Toujin stone

S1·E16

Return of the Assassin

Jan 20, 2005 · 24 min

Mozu teams up with easy-going Kikusaki (Shikigami - Houjou no Ruri) to search for more Toujin stones, and a deranged Izou goes with them, hoping to destroy Riku and Kogenta. Teru m

S1·E17

Underwater Battle With White Tiger

Jan 27, 2005 · 24 min

Momo, Rina, and Ryuuji come with Riku and Nazuna to a water field in the Fukumaden. Riku, Kogenta, Nazuna, and Horin then must fight underwater against the Chi-ryuu's Mutsuki (Shik

S1·E18

Fortress' Seal

Feb 3, 2005 · 24 min

Masaomi's bike gets a flat tire. A passerby on a motorcycle helps repair his wheel. As a way of showing his thanks, Masaomi gives the man a special coupon. It is revealed later tha

S1·E19

Struggle in the Secret Hot Spring

Feb 10, 2005 · 24 min

Riku recieves a letter from Teru. It says that he needs his help at the Kitaguni Hot Spring Village Shinzansou. It turns out that Teru ate a lot of food that wasn't his at an inn i

S1·E20

Shivering Big Spirit

Feb 17, 2005 · 24 min

Oosumi, the Technology Research Department Chief for the Chi-ryuu, speaks of putting a Toujin stone into a Shikigami. When the revenge-driven Izou hears about this, he takes the To

S1·E21

That name is Yakumo

Feb 24, 2005 · 24 min

Riku wakes up and finds himself in another part of Fukumaden. He is then attacked by a masked Toujinshi named Taishin and his Shikigami, Shousetsu no Magahoshi. They think that Rik

S1·E22

Seal Engraved on the Heart

Mar 3, 2005 · 24 min

Riku and Kogenta arrive in a tranquil part of the Fukumaden. Riku feels very nostalgic about this place. But a Chi-ryuu Toujinshi, Gaitatsu and his Shikigami, Aogane no Nanaya, com

S1·E23

White Tiger Disappears

Mar 10, 2005 · 24 min

Riku has been having a lot of dreams lately, each involving a pleasant yet sad woman. When the giant Kimon in the Mikazuchi building opens, a lot of Youkai run amuck. Although Mika

S1·E24

The Past, Once Again

Mar 17, 2005 · 24 min

Kogenta is dead, and Riku has lost all of his memories from when he was a Ten-ryuu Toujinshi. So, he doesn't remember Souma, Nazuna, or the boat club. Masaomi discovers that Riku's

S1·E25

Open.Zero Drive

Mar 24, 2005 · 24 min

Riku has regained his memories and is reunited with Kogenta. He also meets Yakumo again, who tells him about the Fukumaden and the past. There once was a man named Utsuho, and he h

S1·E26

Northeastern Opens

Mar 31, 2005 · 24 min

Riku and Souma head for the Chi-ryuu base, the main building of Mikazuchi Products. Along the way, Souma gives Riku some backrgound information on Mikazuchi, the Head of the Chi-ry

S1·E44

Red Trap

Aug 4, 2005 · 24 min