The Opening theme would Play, before diving into the third part. (play Sora to Utsuro by Sasanomaly)

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Riku: (surprised, confused) "Brother?" Yusei would look at Riku, causing Kairo to grin a bit as he said, "Yusei, focus a bit to the enemies ahead.."

Yusei: (angry) "What are you doing here?" Yusei would shout at Riku, as he didn't know Riku and the rest of his classmates were also sent here for the Demiwars Tournament.

Riku: (angry, shouting) "you only showed up here in front of me, like you can control my actions... you were never here for me when i need you the most...", Riku was pissed off but he felt like crying.

Kairo: (eyeing at their feud, clearing his throat) "Yusei, Riku stop arguing for a moment and help me deal with this threat."

Kairo, Yusei, Riku, Lilith, Sayu, Jiya, Camila & Nari would face the two enemies in front of them, ready to fight them.

Little did they know that, Xebec was recording the entire thing as he was ready to show himself to the Enemies with Kiyoshi, Suna, Nora.

Seiko would finally arrive to Xebec's Room, as she introduced herself as the 2nd member of Zero Kaiden, causing Xebec to tell her to head to her leader's room for now.

Seiko nodded and walked off to her leader's room, as she noticed Kiyoshi and Suna greeting her as they said, "Umiko and Hiroyuki were killed by the enemy..." causing Seiko to get upset and angry as she asked who did it, as they showed the image of Riku causing her to want revenge for her fallen comrades.

...

Seiko, Azumi, Xebec, Nora, Kiyoshi & Suna would prepare their portal which would bring them in front of Kenta and Suzuka as they were about to start their fight with Riku and the others.

Lilith: (confused) "Brother...?!" Lilith would eye her brother with worry, until he eyed his group, saying "Scatter.", which caused them to scatter, leaving Xebec to face Riku and the others.

Kairo grinned, while he unleashed his executioner weapon, absorbing the very essence of his soul to unleash himself to his divinity state as he boosted straight towards Xebec, spinning as he tried slashing him, however Xebec simply caught the blade, sending Kairo flying into the trees before sledgehammering him into the ground, causing him to tap out of his divinity state.

Xebec eyed Lilith, as he smirked while lifting her up by the neck, saying, "...you are acting like her...but now i'll just kill you myself then..", causing Lilith to freeze up a bit causing Yusei to tell them to scatter as well, but Nora, Suzuka and Kenta would try to interfere but Yusei unleashed his full powered darkness essentia, as he extended his palm to fire his signature attack, Darkness Vortex, but that would get overpowered as Xebec simply negated it by slapping it away, causing Yusei to get pissed off, before dashing at xebec in order to send a strike into his gut causing xebec to swiftly send a shockwave into Yusei's stomach, causing him to spit out in pain before passing out beside the tree, causing Riku to look at Xebec slightly pissed but scared.

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Xebec: (thinking) "i didn't really need them to help me out in this endeavor, they just volunteered but i guess it's time i get of the ones that supported me, through thick and thin.." As Xebec teleported away, taking Kenta and Suzuka's powers for himself.

Xebec would notice Kenta & Suzuka's souls floating upwards, but they would slowly raise up into the sky, but little did everyone know that the souls of Kenta & Suzuka entered inside of Sayu, causing her to scream in pain as she created craters around everyone.

Riku: (worried) "Sayu...", causing Riku to ask Lilac to assist him, causing Riku to close his eyes as he summoned a blade within his will.

Riku: (angry, but serious) "...Judgement Slice", as Riku dashed at Xebec, it felt like he was missing his swings, until Xebec grinned before lifting Riku up by his neck, causing him to gasp for air.

Xebec: (serious, while holding Riku by the neck) "..Humans, Demons & Angels were once peaceful races, we all enjoyed things together until the day Yami arrived, yes i get that the humans who i fought saved the realms, but did you ever think about how i felt, my father died...by a demon and a human but they never checked on how that would affect our life, but now i realize that you humans were capable of destroying the angels, i thought that maybe i should show you why I am the Demon King, boy."

Riku would stare down Xebec, until Jiya and Nari nodded to strike at Xebec at once but they would get overwhelmed as Xebec sent his hand through their chests, causing Riku to watch them die in front of him, as he shouted for the names of Jiya and Nari.

Riku: (in thought, upset) "...first it was Chloe and her team, then this...not to mention everyone else who died before this tournament...why couldn't i have died instead of them, they didn't deserve to live like this.."

Riku: (angry, tears rolling down) "..Awaken..", as Riku said this word, the very atmosphere changed with his demeanor changing from his normal demeanor to more of a serious but cold demeanor.

Riku would close his eyes, as he thought of Goku's Abilities, causing him to use his very anger as a tool, causing his hair and eyes to change colors, but that was easily stopped as Xebec put his hand on Riku's Chest, stopping this power creep mess in front of him, instantly knocking Riku Out.

Xebec: (smirked) "Stand Proud, You are Strong.."

Xebec would teleport again but this time to Suna & Azumi as he lifted his hand, as he said, "Scatter, Slice & Disappear", causing slashes to get rid of them as a whole, until all that was left of them was the very particles of their bodies.

Xebec would then tell Kiyoshi, Nora & Seiko to take care of Yusei and Kairo, before they wake up after they were knocked back by him, causing Riku to slowly get up.

Riku: (mumbling) "...I'll make sure that i-.."

Xebec: (grinning) "...oh, like the time where my minion, Owen killed your teacher?"

Riku: (serious) "what did you do to her!?", as Riku said this, a small flashback would play, as we would see Riku and Julie, interacting with each other the day she came to the demon realm, as she started crying about her father.

...

Riku: (deep breathing, serious) "...I'll make sure to kill you for all the harm you caused and finally end this tournament for good.."

Xebec: (eyeing Riku) "..I like that out of you, Boy.. now show that power of yours, already."

Xebec and Riku would start walking up to each other again, but this time they were both at full power, except Riku was more beaten up than Xebec.

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(Ending Theme Plays) (play Sen no Yoru wo Koete by Aqua Timez)

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((Final Part coming soon))