"That Grail. Its very existence is a paradox. A Unholy Grail." J or called Aki by his friends, was a normal high schooler in California, 2008. On his way home one day, just a block away from home, he suddenly found himself in almost another world, yet the same. Unknowingly a voice spoke out to him changing his life forever. After his practical adventure in the underworld... he contracts with his very own servant, "Ereshkigal - Queen Of The Underworld". Though, without much time in-between their meeting, an enemy servant appears, and the two clash. With his future unknown and the introduction into the magus world... Will J be able to find his meaning to fight and try to contest the grail?