Jinpei spent several days training with the members of Silver Eclypse, hoping to gain better control over his power. He tried every technique they taught him, but it all seemed futile. No matter how hard he tried, he could not control the monster power that resided within him. Each time he tried, it felt like he was fighting against a force that was stronger than he was.

Frustrated, Jinpei collapsed on the ground, panting heavily. He could hear the members of Silver Eclypse whispering among themselves, and he knew that they were losing hope in him. He couldn't bear to look at their disappointed faces.

"I'm sorry," he whispered, feeling like he was letting them down. "I'm trying my best, but I just can't seem to control it."

Hayato, the leader of Silver Eclypse, stepped forward and placed a hand on Jinpei's shoulder. "Jinpei, I have a proposition for you. This will be your last training."

Jinpei tensed, wondering what they could possibly want from him now.

"If you win this fight," Hayato continued, "you will have full control over your power. But if you lose, you will become a monster forever, and we will have to kill you to protect innocent lives."

Jinpei hesitated for a moment, considering the offer. It was a risky gamble, but he had no other choice. "I accept," he said finally.

Hayato nodded, and the other members stepped back, forming a circle around Jinpei. Yumi stood at the center of the group, her eyes closed in concentration as she wove her illusions around Jinpei. In an instant, he was enveloped in a swirling vortex of light and color, and then he was gone.

Jinpei found himself standing in a vast and serene training ground. A lush green forest surrounded him, and a gentle breeze rustled through the trees. In the distance, he could see a waterfall cascading into a pool, where he and Drake used to train together.

"Where am I?" Jinpei muttered to himself.

Suddenly, he heard a voice behind him. "You're in your inner world, Jinpei."

Jinpei spun around and saw a figure standing there, shrouded in shadows, with a twisted grin on his face. Jinpei could see the monster power surging through his body.

"You are my inner self?" Jinpei ask "Will you help me control my power?" 

"Oh, I will," his inner self replied. "But I have a better idea. Why don't you give me your body?"

"What?" Jinpei shocked upon hearing the word. 

His inner self chuckled. "You're a fool, Jinpei. You can't control the power on your own. Let's me do it for you."

Jinpei scowled and took a step forward. "I see you have no intention to help me. Let's resolve this with our power then."

His inner self grinned and stepped forward as well. "Very well. Let's see what you've got."

They began to fight, the two figures launched themselves at each other, their bodies colliding with a deafening crash. Jinpei's inner self was fast, incredibly fast, and he seemed to know every move that Jinpei was going to make before he made it. The battle was fierce, and Jinpei felt himself getting weaker and weaker with each passing moment.

Meanwhile, in the real world, each member of Silver Eclypse took turns fighting against Jinpei, trying to prevent him from transforming into a monster. But despite their best efforts, he was gradually losing control.

Hayato, the leader of Silver Eclypse, was the first to face Jinpei. He was a skilled martial artist, with the ability to move at blinding speed. However, even with his skills, Hayato was no match for the raw power of Drake's monster form.

Next was Takumi, a quiet and reserved member of the group, who had the power to control the earth itself. He attempted to subdue Jinpei by creating massive earthen walls and traps, but Jinpei's brute strength allowed him to break through with ease.

Then came Rina, a petite girl with an unsettling grin. She had the ability to control the thunder, she created many thundercloud and send them to Jinpei. However as Jinpei become more and more like a monster, her attack seems to be ineffective.

Finally, it was Ken's turn to fight. Ken was a former officer of the City Hall, but he was betrayed and left for dead by his superiors. After joining the Silver Eclypse, he gained the ability to transform into werewolf. Ken fought with all his might, but it was clear that Jinpei was too powerful.

As each member fought against Jinpei, Yumi continued to send his mind deeper into his inner world. There, Jinpei was engaged in a fierce battle with his own inner self. The inner self was a reflection of Jinpei's own psyche, but it was far more skilled at controlling the monster's power.

Jinpei's inner self was a master of strategy, dodging and countering Jinpei's every move. Jinpei tried to defend himself but he struggled to keep up with the brutal onslaught from his inner self. Drake emerged from his body and the two of them began to fight back. Drake moved quickly and gracefully, shooting flame at Jinpei's inner self. However, Jinpei's inner self was relentless, striking back with ferocity and precision.

The battle continued for what felt like hours, and both Jinpei and Drake were starting to tire. It seemed like the inner self was getting the upper hand, slowly taking over Jinpei's body. But just as things were looking dire, Drake managed to land a powerful blow that knocked Jinpei's inner self back.

The inner self looked up at Jinpei and sneered. "You're weak," he said. "You're always holding me back. But I'll show you what true power is."

Jinpei stood his ground, determined to win this battle and take control of his power. "I won't let you take over," he said firmly. "I'll always control my power. You're just a part of me that I need to keep in check."

Drake seemed to understand its owner's will. Drake had transformed into a gauntlet that wrapped around Jinpei, its flames mingling with Jinpei's power to create an extremely intense effect.

The inner self growled and lunged forward, but Jinpei was ready. He dodged the attack and countered with a powerful punch that sent the inner self flying backwards.

"Impossible," his inner self gasped. "How could you defeat me?"

"Because I refuse to give up," Jinpei said, his voice filled with determination. "I won't let you take over. I'll control the monster power, no matter what it takes."

As the inner self lay on the ground, defeated, Jinpei walked over to him. "You're not me," he said, looking down at his defeated inner self. "You're just a part of me that I need to keep in check. I control my power, not the other way around."

With that, Jinpei's inner world began to fade away, and he was sent back to reality.

As he returned to the real world, he saw the Silver Eclypse members gathered around him, battered and bruised. 

"I am back!" Jinpei's eyes glowed with a newfound sense of control, and he knew that he was ready to face whatever challenges lay ahead.