Kiba's eyes widened at the implications. Junichiro continued, "So, if that can be a sword, why can a similarly small sword not be bent into the shape of a ring? It is still a sword, is it not?" Junichiro's grin grew feral, "So, if it is a sword and Sword Birth can make magical swords, why can it not make tiny magical swords in the shape of jewelry that still contains those magical abilities?!"
Everyone's eyes widened in shock at the revelation. It was honestly a path of thought that none of them had ever gone down but it was so logical. Thinking about it, why couldn't Kiba do the exact same thing as Junichiro had done? A sword was a sword. Changing its size and bending it wouldn't change that it was a sword.
While everyone was shocked by the revelation, Junichiro moved. Without anyone seeing how he got from point A to point B, Junichiro vanished from his previous position and appeared directly in front of Kiba faster than the swordsman could see. Eyes widened even further as they saw the razor edge of Junichiro's sword held level with Kiba's throat. Junichiro could see the question in Kiba's eyes, 'how?'
"As a human I am weaker than most supernatural beings. Devils are inherently faster, stronger, more durable, and more powerful magically. But, you are far less creative than I am. That sword in your hand is a testimony to your limited thinking. A simple steel blade with enhanced sharpness. Frankly, what good is a sword like that in a fight between beings like us?"
He pulled his sword from Kiba's neck, knowing Kiba would honor his loss. This allowed Kiba to get his first real look at the katana held in Junichiro's hand up close. His entire expression radiated shock.
"That's right Kiba. You used steel, I used Mana Steel folded five hundred times and enchanted for durability." He held up the saya, "Sheathed in a saya made of ironwood, also with enhanced durability. You fought with a toy, I fought with a weapon of war."
Kiba took a step back and made a motion as if sheathing his sword, causing it to disappear, "It's my complete loss."
Junichiro grinned and stepped back himself, "We'll exchange tips and tricks later."
He turned his back to Kiba, trusting in his honor while Sona called out, "Kiba is defeated."
Junichiro faced the three ladies still remaining with a bright smile, "I haven't had this much fun in forever. Let's see... who's next?"
His answer came in the form of the sound of the floorboards of the gym breaking as Koneko used her formidable strength to launch herself at Junichiro. Rather than block her punch with his saya once more, knowing it would break from the stress. He, instead, met her fist with his own fist. Their respective fists clashed together with minimal force. Junichiro smirked and activated the same ring he'd used on Koneko the first time. With the same flash of white light, Koneko was once again blasted off of her feet and across the gym.
"I'm nowhere near as strong as you little Kitten, but that doesn't mean I can't beat you with your own strength!" He held up his hand showing of a sword that had a white gem in the middle of its cross-guard, "This one absorbs kinetic force, stores it, and then releases it on command. The release loses power over range, but it's still excellent for countering melee fighters!"
As he talked, both Rias and Akeno fired off water based attacks, which were ignored and absorbed by a sword with a blue gem. Junichiro waved his hand and fired a water attack at Akeno that used the combined power of the attacks she and Rias fired. She managed to block the majority of the attack by using a magic circle as a shield, but still ended up completely soaked.
"You can't just rely on brute force little kitten. Brute force is only useful in the lowest levels of fighting. Against anyone with skill, or a solid counter, it's useless. You should also beware tricksters like me, we're your worst enemy!"
As he finished speaking, a brown colored stone on one of his rings flashed and the floor beneath Koneko opened up into a deep pit that feel for a dozen feet. Koneko was so surprised by the sudden event that she forgot she had wings as she fell to the bottom of the pit. With another flash, the floor reformed where it had been, though there was still an empty space big enough to hold Koneko without hurting her. It wouldn't hold her for forever, but it would take time for the tiny terror to pound her way back to the surface.
He turned to look at the last two standing and grinned broadly, "So, tell me. What can either of you do without magic?"
Seeing both women grimace made him frown, "Seriously?"
Rias shrugged, "I've got my Power of Destruction but... this isn't that kind of serious deadly fight."
He looked at Akeno, "What's your excuse?"
Akeno held up her hand while sparks of electricity danced around her fingers, "I'm called the Lightning Priestess for a reason."
Junichiro rolled her eyes, "Lame. You're a Queen right?" After her confirmation nod he continued, "Queen combines all the powers of the Rook, Bishop, and Knight together right?" Another nod, "Then why the fuck don't you know how to fight in melee? If you're just going to be a mage then you're completely wasting two thirds of the power of the Queen Piece! It's a disgrace, you'd have been better off as just a bishop!"
Akeno glared at him, but couldn't come up with an argument against his logic. While she did use the durability of the Rook to withstand damage, she completely neglected its physical strength. The same could be said of the speed a Knight possessed since she tended to act more like artillery in a battle. She dealt tons of damage from a safe distance.
Rias opened her mouth, likely to defend her Queen, but Junichiro cut her off while ignoring the dull thumps coming from underground, "Ugh, this is boring. Even without going all out I'm beating the pants off of you guys. Forget it, you can have the money, I surrender."
There was almost dead silence as everyone stared in shock while Koneko continued to pound her way out of the pit Junichiro trapped her inside of. Junichiro dismissed his swords as Sona called out, "Rias Gremory wins."