Video's main character is Alone.
Alone is a very talented painter, and he is in love with his childhood friend, Sasha, who was taken by a Gold Saint to the Sanctuary, because she was the Goddess Athena in a human form, in order to be protected from her mortal enemy, Hades.
Alone has got a very pure soul, and later, 2 years after Sasha was taken away from him, Hades, the God of Hell posseses Alone. Now everything he draws just die or get destroyed, but Hades can't get rid of Alone's feelings for Sasha and he is poisened by them, he falls for her.
Sasha meets Tenma, Pegasus, in the Sanctuary and gradually discovers to have feelings for him, even if she is still in love with her friend, Alone.
When Hades finds out about Sasha and Tenma, he destroys Tenma's hometown and kills him. Tenma is now Hades' prisonier in hell and Hades' offer of changing sides, and join him in the holy war.
Tenma rejects him, telling him that he doesn't want the world to became the same as Hell.
Hades goes to visit Athena, and confesses his feelings to her, but the Saint who took her, stops him, when Alone reconizes him, he kills him, without thinking of it twice.
After that move, Sasha understands that the boy she loved is gone, and starts to fight aganist Hades. At this point Tenma shows up and protects Athena, Hades destroyed by the pain of the lost of Sasha decides to end everything there, and destroys himself, Athena, Tenma and the whole world, because if he didn't have Athena for himself, then no one will.