The "Otherworld" is a vast and dangerous realm hidden from the knowledge of the common folk. It is also home to many creatures that threaten any human who dare visit it. To witness its desolate yet oddly absorbing environment, one must search for portals that could reside anywhere, from secret elevators to shrine entrances. After a fateful encounter with a horrendous Otherworld denizen, Sorawo Kamikoshi ponders whether to keep going or give up in life. Meanwhile, Toriko Nishina scours the Otherworld in hopes of finding her friend Satsuki, who she believes is lost somewhere within the realm. When the two cross paths, friendship blossoms. In order to acquire as much information about this obscure dimension, the two travel back and forth from the real world to the other. Sorawo and Toriko's bodies are soon influenced by the Otherworld, preparing them for the many horrors to come as both of them try to fulfill their goals.

He awakens in the dark forest of a mythical land with some type of leopard mask that he cannot remove. The only thing he remembers is his name—Guin—and that he is a warrior of unimaginable power. And when the two twins of Parros, innocent victims of a civil war arrive, Guin knows what he must do. But the journey to save the children means much more than just slaughtering a few hundred well-trained Mongoul soldiers. Victory means he must battle magical desert tribes, assemble forces that have fought each other for hundreds of hears, and divine a mysterious plan that he is central to. Prepare for a sweeping anime epic of mystery and magic! Of violent clashes and dark double-crosses. Ready yourself for the battle with Guin Saga. (Source: Sentai Filmworks, edited)