The rain was pouring down heavily as Spec and Koichi faced each other in the middle of Tokyo. The civilians had backed away, many seeking shelter in nearby buildings. Only the bravest dared to watch the battle that was about to take place. "You're the one they call Echoes, huh?" Spec said, a wicked grin on his face. "Let's see if you can back up that reputation of yours." Koichi didn't flinch. He knew this wasn't going to be an easy fight, especially since he was going against a Stand User with such immense power. "Are you ready, Echoes?" Koichi asked as he summoned his Stand, Echoes ACT 1. "You have no idea," Spec replied as he summoned his own Stand, Darkhart. The two Stands circled each other, the tension between them palpable. Suddenly, Darkhart launched a flurry of punches at Echoes, who barely managed to dodge them. "Nice try," Koichi said, his confidence growing. "But you'll have to do better than that." Darkhart snarled and launched himself at Echoes, forcing Koichi to roll out of the way. Echoes ACT 1 retaliated with a Resonant Slash, but Darkhart dodged it with ease. "Is that all you've got?" Spec taunted, a hint of madness in his voice. Koichi knew he had to switch to Echoes ACT 2, so he closed his eyes and concentrated. When he opened them again, Echoes ACT 1 had transformed. "Bring it on!" Koichi shouted. Echoes ACT 2 unleashed a wall of sound waves, which Darkhart easily broke through. Spec grinned, impressed with Echoes ACT 2's power. But Koichi wasn't done yet. He switched to Echoes ACT 3 and punched Darkhart, increasing his weight and immobilizing him. "Now's my chance," Koichi thought. Echoes ACT 2 released a sonic boom, causing explosive damage and disorienting Spec. It was all Koichi needed to land the finishing blow with Echoes ACT 3. "Time to end this," Koichi said. Echoes ACT 3 dealt a devastating blow to Darkhart, leaving Spec unconscious on the ground. "That was too easy," Koichi said with a smirk. As he walked away from the battlefield, he heard a faint whisper. "I'll be back," Spec said, his voice tinged with madness. Koichi knew he had won this battle, but he couldn't shake the feeling that this was only the beginning of something much bigger. The rain continued to pour down, washing away the blood and sweat from the battle that had just taken place. The city was quiet once more, but in the back of Koichi's mind, he knew that another battle was just around the corner. And when it came, he would be ready.