Takeru Series by Kazuki Nakashima, Karakarakemuri

There is a legend that speaks of a powerful sword hidden and sealed in 'Jagara-Mogara'. It is said that when the spirits of Light, Water, and Earth come together, the seal of this sword will be broken, and the sword will be immortalized. This is the sword of Susanoh. Upon pursuing the sword, Izumo, Kumaso and Oguna arrive at the nation of Jagara, where they confront a darkness that envelops anyone seeking the sword of Susanoh, including these three who are destined to find it.

There is a legend that speaks of a powerful sword hidden and sealed in 'Jagara-Mogara'. It is said that when the spirits of Light, Water, and Earth come together, the seal of this sword will be broken, and the sword will be immortalized. This is the sword of Susanoh. Upon pursuing the sword, Izumo, Kumaso and Oguna arrive at the nation of Jagara, where they confront a darkness that envelops anyone seeking the sword of Susanoh, including these three who are destined to find it.

The kingdom of Jagara is in ruins. Queen Yamato, along with the hero Kumaso, is now under the control of the evil Sword of Kusanagi and its army of puppets. Queen Azuma has turned traitor. Queen Miyazu has traveled to the land of Kizumi in the hopes of finding another holy sword that can stop Kusanagi.

"Takeru: Opera Susanoh Sword of the Devil, Volume 4".