"Why do you keep experimenting on yourself?" Sirzechs asked.
"Because I know this will work, despite the dangers," Kiba replied confidently.
"That explains your new form. If you don't stop these experiments, I'll stop teaching you," Sirzechs threatened, though he knew it wouldn't change Kiba's mind.
"Thank you for everything," Kiba said, walking away from the castle and passing by a certain devil without a second thought. He teleported back to his room and went to sleep.
Sirzechs sighed, recognizing the same stubbornness in Kiba as in the past. Then he noticed the devil who had walked past Kiba. "Rizevim, what do you want?" Sirzechs asked, his expression serious.
"Oh, come on, smile a bit. I just have something to discuss with your father," Rizevim replied with a devious grin.
---
Back in the human world, Kiba was both annoyed and angry. He understood their concerns but felt they were unnecessarily interfering.
[They are right, you know,] Ddraig told him.
"You too?" Kiba sounded annoyed.
[Haha, don't be mad. I know your methods are unconventional, but you did have success with the X-Gene,] Ddraig said.
[They don't know the real dangerous methods I haven't even started yet. Sentry Sword is too dangerous for a devil like me. A power equivalent to ten million suns would kill me,] Kiba reflected, deciding to halt its creation.
[You have that kind of imagination? You are quite the terrifying devil,] Ddraig complimented him. [If you were born in a world full of wars, you would become Death itself on the battlefield.]
Kiba chuckled at the comment. [No, you're right. My imagination is dangerous. I think my Earth Buster Sword is also dangerous. I haven't even touched it yet, and I'm a bit afraid of what would happen if I use it.]
[Try it with Boosted Gear,] Ddraig suggested.
"Yeah, let's try," Kiba said, activating Boosted Gear and summoning the Earth Buster Sword.
He instantly understood its capabilities. "I can only use it once before it breaks and destroys my body, killing me. It uses equivalent exchange. No wonder it took days to create this unlike any other strong sword," Kiba said, gritting his teeth.
[You should be more careful with your imagination,] Ddraig reminded him.
"Yeah, you're right," Kiba said. "I lack self-control when creating weapons."
[How about you tell me what kind of sword you want to create before starting?] Ddraig suggested.
[That's a good idea,] Kiba agreed. [I'm going to create a Sharingan Sword.]
[What is a Sharingan?] Ddraig asked.
[A magical eye ability that allows me to predict movements and copy techniques. It has several stages,] Kiba explained.
[Seems like a great idea, go ahead,] Ddraig encouraged.
Kiba began creating the Sharingan Sword, using Boosted Gear to shorten the creation time. After two hours, the sword was finished. He put it in his pocket dimension.
He activated the sword's ability, and his eyes turned scarlet red with one tomoe. He amplified his anger and hatred. Two tomoe, three tomoe, then the shape changed into a shuriken-like pattern. His eyes began to bleed.
His Sacred Gears started cracking, seemingly evolving, but he stopped amplifying his emotions.
"It worked," Kiba smiled. 'But what abilities do I have?'
He instantly knew. His left eye had the ability Genkai Shometsu (Limit Erasure), which nullified energy-based attacks or techniques. It created a field that absorbed and dispersed techniques, disrupting the flow of energy in enemies.
His right eye had Energy Koka (Energy Hardening), which hardened and reinforced physical attacks with absorbed energy. Combined, these abilities were called Kuron No Me, allowing Kiba to create zones of nullification.
[Kiba, what happened? Your eyes started bleeding,] Ddraig asked, confused.
[It's just part of the process,] Kiba explained. [This will be great in the future, but not now.]
Kiba deactivated the Sharingan and Boosted Gear, then lay down on his bed. 'I really just want to sleep all day,' he thought, but then he opened his eyes again. 'I need to get stronger.' He got up and resumed his training, beginning to create a Demonic Generator Sword inspired by the Android Ki generator.
Meanwhile, the atmosphere in the mansion was tense. The recent argument with Kiba had left everyone feeling bad.
They stared blankly, unsure how to approach Kiba, who had clearly been annoyed and frustrated. This was the first time such a confrontation had occurred.
"What should we do?" Rias asked, her worry evident.
"Nothing," Akeno suggested. "If this is the same as before, we should just let him be."
"But if not, Kiba-senpai might do even more dangerous experiments on himself," Koneko added.
The three of them headed to his room, only to find him shirtless, doing push-ups.
He didn't hear them enter but sensed their presence due to his Sage Mode. He was also listening to music through a Music Sword he had created.
"What do you guys want?" Kiba asked, switching to handstand push-ups and turning off the music.
"We were worried," Akeno expressed her concern.
"I appreciate your concern, but isn't this too much, entering my room?" Kiba said, struggling slightly with the handstand push-ups. "What would you do if I barged into your room?"
"You're right, Kiba-senpai, but this is about your safety," Koneko replied.
"I'm not doing anything crazy," he said, stopping his exercise and wiping his sweat.
"Crazy? You experimented on yourself," Rias pointed out.
"Please, don't start that again. I don't care what you say; I won't stop," Kiba stated firmly.
"But why are you doing this?" Rias asked.
"Because I won't die without a fight," Kiba explained. "The Gremory's will be at the center of conflict. I need to prepare for the upcoming battles."
"Why take it to such extremes? There's still time," Rias reminded him.
"Are you sure? Do you really think we have time?" Kiba asked, his expression serious.
"Do you know something will happen?" Akeno asked, surprised by his demeanor.
"Yes," Kiba nodded.
"Why didn't you tell us, Kiba-senpai?" Koneko asked, feeling unimportant because he hadn't confided in them.
"Because telling you would only cause panic and worry. I am the Knight; it's my responsibility," Kiba said.
"You don't have to bear this burden alone. Tell us," Rias pleaded, standing in front of him.
"No, you're all still too weak," Kiba said, turning away.
"Prove it, that you are stronger than us," Rias challenged.