As Rex said that he knows where Ken's father is, a ray of hope lit up in Ken's eyes. He immediately asked, "Where is he?"
Rex replied, "When that massive energy clash occurred, I got trapped in a time loop. At the same moment, your father was pulled into the Dark Dragon's world. He's likely been captured and is now held within the Dark Dimension."
Ken clenched his fists. "Then tell me the path! I will go there and defeat the dragon!"
Rex shook his head. "Ken, you're not yet strong enough to face its power. To defeat the Dark Dragon, you must first find the Sword of the Universe."
"The Sword of the Universe?" Ken asked. "What is that? And where do I find it?"
Rex explained, "When the Gods and the Seven Star-Human Lords created the Ring of Elements, they also forged another artifact of equal power—the Universal Sword. To defeat the Dark Dragon, you must wield both the Ring and the Sword."
Ken's eyes burned with determination. "Tell me where it is. I'll do whatever it takes."
Rex continued, "The sword is located in a place far beyond anyone's reach, a realm beyond space and time itself. It is called Infinity. No one can enter it easily—it is guarded by the strongest beings in existence."
Ken leaned in. "Who guards it?"
"A divine warrior," Rex said solemnly, "the God of All Sword Techniques, Lexus. He is the final guardian of the sword. But before you reach him, you must first face and overcome four elemental dragons that protect the gates to Infinity. Only then can you challenge Lexus and prove yourself worthy of the sword."