Acid

'In terms of raw power, he's far stronger than me. He's also faster than me and his healing factor is ridiculous. I suspect he's not even human. But none of that matters to me.' Requin thought as he began to walk towards Meliodas.

"So now it's just you, Requin." Meliodas stated as he walked closer to him.

"I guess you could say that." Requin responded, also walking towards Meliodas. The two of them continued to walk across the deck of the ship until they were standing right in front of each other.

"You're quite skilled. But all of the power in the world won't help you against me." Requin commented. "Let me show you why I'm the leader of the Six Guards."

'The Six Guards? Not Blue Guardians? Are there more of these guys somewhere?' Meliodas thought as he looked towards the door leading to the hull of the ship.

Requin immediately jumped back and up into the air.

"Requip: The Anchor!"

A slender metal anchor with large blade-like arms was summoned into Requin's right hand, where he held onto the loop that was covered in bandages. He launched himself at Meliodas and swung the anchor towards him.

Meliodas ducked backwards, the anchor barely missing him. Meliodas continued to lean back, transitioning into a kick. To his surprise, he felt his kick connect with nothing as he flipped over, landing on his feet again.

As he landed, Requin had already begun his counterattack and slammed the anchor forward into Meliodas. Meliodas grabbed onto the anchor as he was pushed back, gripping firmly onto the anchor and causing it to crack.

'Damn he has a strong grip.' Requin thought as he tried to pull the anchor out of Meliodas' grip. He jumped backwards and let go of the anchor. Meliodas let go of the anchor and dropped it onto the ground as he pursued after Requin in the air.

The two of them exchanged a flurry of kicks and blows in the air. As Requin threw a punch, Meliodas blocked it and retaliated with a quick jab at Requin's torso. Again, Meliodas felt nothing as he threw the punch at Requin.

'My attacks are going through him?' Meliodas thought as he switched to the defensive and Requin continued a barrage of punches and kicks at Meliodas as he held his arms up in front of him.

"It doesn't matter how strong you are if you can't hit me." Requin stated confidently as he continued attacking Meliodas.

"No matter how durable you may be, you can't block forever!" Requin continued as Meliodas held his guard up. Meliodas could feel each of Requin's individual punches were on par with Girafe's "Twister" enhanced punches.

Meliodas dropped his guard and quickly darted backwards to the deck to retreat. Requin landed on the ground in front of Meliodas with his arms outstretched tauntingly.

"Is that all?" Requin commented. "I haven't even shown you the full extent of my power yet."

Requin jumped forward at Meliodas, his body wide open as he raised his left arm up above him. Meliodas quickly turned around, lunged forward towards Requin and put his hand on the handle of Neo Mel Force. Requin's eyes widened with surprise as Meliodas suddenly vanished from his sight, reappearing behind him.

"Thousand Divine Slashes!"

Requin's body was cut into pieces, but again, Meliodas could feel none of his attacks connect. The cut pieces of his body dispersed into a strange purple acidic mist. Meliodas turned around as the mist began to quickly reform in front of him back into Requin.

A grin formed on Requin's face, revealing his shark-like teeth as he swiped down with his left hand at Meliodas. Meliodas felt a strange wetness hit his body as acid burned away at his tunic, leaving him completely shirtless. Meliodas quickly retaliated with a slash from his sword, only for it to phase through Requin as Requin stared at Meliodas dumbfoundedly.

"You're...unaffected by my acid?" Requin commented. "You might actually be a bad matchup for me...assuming you could actually hit me."

'He turns his body into an acid mist which is why all of my attacks keep fading through him. If physical attacks don't work, I'll have to resort to magic.' Meliodas thought as he raised Neo Mel Force up in front of him. Requin's eyes widened as he felt a strong magical presence coming from Meliodas and being channeled into his blade.

"Resorting to magic finally?" Requin asked.

"Enchant: Hellblaze!"

Neo Mel Force became clad in black flames and Meliodas jumped towards Requin, slashing down diagonally across his body. To Meliodas' surprise, Requin's body remained undamaged and he reformed next to Meliodas.

"Whew. Those were some hot flames. I don't think I've ever seen fire like that before." Requin commented as he threw a punch at Meliodas. Meliodas put his arm up to block as he was launched backwards.

"Not even magic can hit me. This power of mine "Acid Rain" is absolute. There is nothing that can possibly hit me." Requin continued.

"Is that so?" Meliodas responded. His features began to change, and his eyes turned a dark color. A spiral shaped henna formed above his right eyebrow and a dark magical aura radiated from him.

"That power...is formidable…" Requin said, visibly shocked by the change in Meliodas. He looked down at his hand and saw his hand trembling. 'Why am I afraid? He can't hit me. All that power is useless against me.'

Meliodas raised both of his hands up above him. A large mass of darkness formed above his hands. Meliodas glared at Requin and threw the mass of darkness at him. Requin smiled nervously as the darkness approached him. 'That can't hurt me. I'm untouchable.'

Requin suddenly found himself enveloped by the darkness. A strange pressure covered his body as if it was compressing him. He soon found himself unable to move as the darkness around him began to compress into a thin veil.

'He trapped me?!' Requin thought as Meliodas leaped towards him. 'Even if he did trap me, he still can't hit me so it shouldn't be a problem…'

Meliodas wound a darkness clad fist back as he landed in front of Requin. Requin looked down at Meliodas confidently, expecting it to go through him. His eyes widened as he felt a great pain in his torso as Meliodas' fist went straight through his body.

"GAAAHHHH!" Requin screamed as Meliodas pulled his fist back out, blood gushing from the wound.

Requin fell to his knees then fell forward on his face, blood leaking from his mouth. 'H-he hit me...how...what is this darkness that stopped my body from turning into acid?!'

"Looks like you got a bit complacent with that power of yours." Meliodas said, his demonic features vanishing. Despite bleeding out, a smirk formed on Requin's face.

"You may have defeated me, but you haven't met the true terror of the Blue Guardians!"