Isaac somehow finds himself transported to a set of Mist-filled ruins. He walks into a grand hall bordered by flowing water and sees Illua reading a book. He asks her where he is. Illua closes the book, and draws her katana. Alarmed, Isaac draws Sol Blade, and prepares for a fight.
He casts Stone Spire, but Illua’s agility allows her to dodge the falling rocks and close in on Isaac and use Abyssal Slash. Isaac, paralyzed briefly, wonders how she dodged something most people cannot see. He quickly casts Odyssey, but the three swords miss their mark. Illua starts dueling Isaac with her katana, which he parries with his Sol Blade. The two warriors duel to no avail, sword clashes periodically broken by bursts of magic, psynergy, and frantic dodging. Illua finally scores a hit on Isaac’s arm. She then casts Dimensional Rift, tearing a hole in reality and seriously wounding Isaac. Worried, he unleashes Megiddo. He jumps high into the air, summoning a ball of plasma. He touches the hilt of the Sol Blade to the ball, bringing it down near Illua. Severely injured, she can barely stand as Isaac lands nearby. Illua then casts Sheol. Isaac is paralyzed and can’t move, while Illua is healed and uses the brief break to catch her breath before moving in to finish Isaac, just as he remembers he can still use psynergy with the last of his PP.
Isaac casts Grand Gaia! The floor opens up under Illua, and rocks fly from in the ground towards her. She utilizes her inhuman agility to land on a rock and rides it upwards. She then jumps off and stabs the still-immobile Isaac through the stomach, and pulls the blade up. Illua cleans her sword and kicks Isaac’s body into the water.