Klaus came in just in time. Based on the text that Leonardo has given him along with Zapp and Zed described the situation. His green eyes behind his glass lens look over to the blond and floating blood above his head. Indeed, he has horns from what Leo has described.

Truly, the child seems to hold down on his own however to the Libra executive, the child looks unstable; full of anger, fear, and confusion wrapped into one. He is not in control of himself from the way he conducts himself in a fight. It seems emotions are taking over his mind followed by bloodlust. Although he is glad the boy is alright they aren't out of the woods yet. He needs to end this battle right away so he can get the boy can come to his senses.

"Damn fang hunter! Stay out of this unless you want to become food for this demon!"

"It seems his attention is to focus on you right now." Klaus calmly responds to him.

Then it was Blood Breed's turn to smile wickedly.

"Is that right?"

Klaus widens his eyes when something big overshadows him. Between him was the pair of metal jaws that have been opened before shutting them quickly.

The demon looks between his opponent and this newcomer. The demon wasn't sure what to make of this but looking at the way how he dissolved a part of the vampire's body just from that attack, it looked painful. Assessing which threat is worse, he goes for the redhead with his bloodhound as it opens its jaws and attacks.

His threat assessment is on point because of that reasoning. Something is prying the blood hound's jaws open making his crimson eyes widened. "!"

"Pattern 74….."

74式·絶対不破血十字盾

"Kreuzschild Unzerbrechlich!" -

The blond's red eyes widened as the bloodhound can't break this cross shield with its teeth while trying to get to Klaus. The man looks at him with a grimace and then…

Forgive me. Klaus thought as he has created a crimson projectile.

"Pattern 32 - Stechende Blitzattacke!"

It was aimed at Rust and before the blond knew it. He was immediately impaled against the wall by some kind of lance that was so lightning fast that Rust could barely register. Quickly, his bloodhound howls as it was retracted and went back into his metal arm. "Urk!" The teen growls through his teeth as he grabs the lance that was in his right side, struggling to get it out while kicking his feet against the ground.

Klaus knew it wasn't the best idea and he hates using it against a child but it's better to put him aside and away from danger. He would deal with him later. Right now, he needs to take care of the Blood Breed in front of him.

"Tch! No matter! I don't care which one of you I fight. I will kill you both!" Yelled the Blood Breed as he lunges at Klaus.

As the two were fighting, Rust, in his feral state, cannot seem to ascertain between ally and foe based on how similar these two are just from looking at them. He yells and growls as he grips the crimson lance with both hands, trying to pull it out of it. However, some crimson strands wrapped his hands and forced his hands back.

"?!"

"Oh no, you don't!" It was Zapp as he goes to restrain the teen so the Chief would defeat the Blood Breed without trouble. , "Oi Fish-Face! Make sure he doesn't get up!" He shouted over to Zed as he goes to use his crimson strands to ensnare the teen's form. "On it!" Intense crimson eye darts back and forth from Zed to Zapp while baring his teeth.

This won't do as the anger inside Rust is too much for them. He roared as his metal claw bursts into a huge one and goes to swat Zapp away.

"Oh shit!" The man is quick, jumping away and still has his hold on the teen, "Damnit you dumbass, don't make me tet you on fir-eh?" Then he saw the blood hand and he got smack away as he is sent flying before skidding across the floor. He coughs in surprise as he hits a pillar. "Shit…"

"Rust! Don't do this! Calm down-" But Zed's words fall on deaf ears as the Rust's blood claw also sent him flying as well. The merman cough as he landed roughly on the floor and looks to Rust as the blond has finally got the lance outta of him with the use of his blood claw.

He pants heavily as he looks like he's trying to stand up and stay consciousness. Zed is awed by his strength and his healing factor as the puncture wound from Klaus's lance has been healed. Yet, at the same time, he sees how exhausted he looked. It seems his rampage is taking a toll on him.

"Ha! You should of let the brat finished the job for you! You shouldn't have interfered!" The Blood Breed laughed as he resumes his blood tendrils attacks as he is now against Klaus, thinking he has the advantage over this human. The fang hunter defended himself using his blood technique against his attacks. This much discourages the Blood Breed as he retracts his tendrils and starts to transform them into spikes. He chucks the blood spikes at him but Klaus put up his unbreakable blood cross shield. It further to frustrate the Blood Breed to no end!

"Once I did with you. I'm going to finish where I left off with that damn demon! I won't be beaten!" Then the Blood Breed starts to form his blood fists, larger enough for him to crush him. But…a swooshing sound is heard as a lance came directly into the Blood Breed's torso, pinning him against the floor. The lance looks like Klaus's making the man widen his green eyes in the surprise.

What?! Eyes moved to where the lance has come from and who has thrown it. It was Rust who seem to throw Klaus's lance at the Blood Breed. The vampire now livid as he sees the demon smirk at his own action just now.

"I have enough of you! See if you laugh when I'm going to through with you!"He severed himself in half so he is free from the lance and quickly put himself together. Forgetting the fang hunter for the moment as he is now going for the blond. But this course of action is now considered his fatal mistake!

This is Klaus's chance as he came close to the Blood Breed' side and press his knuckle quickly to where the heart of the vampire lies sending a sharp pain to him.

"Pattern 999….."

999式· 封縛獄久遠棺

"Ewigkeit Gefängnis!"

"Azerrad Viscardi Florin! I hereby seal you!"

"What?! NO!" Fear filled the Blood Breed's eyes whose true name is Azzerad Viscardi Florin. Quickly his body is lifted as he feels being tightened as he is transformed surrounded by glowing coils of red, turning him into a cross. The blond stared at the vampire being painfully contorted into a small cross and watches it fallen into the ground with a 'clink'.

"Despise me, forgive me, resign yourself. I take these barbarous actions to protect the human world."

The blond's eyes now set to Klaus as he approaches the teen, raising his fist. In response, his blood claw starts to sharpen and came in front, ready to attack. He got onto fours, gripping the earth with his human hand ready to charge at him. But it seems the boy looks hesitant from the way Klaus looked at him. He sees him as a threat, just as worse as the other one.

Kill.

The word echoes into his mind. This instinct command continues to plague the boy's mind as if there is no other option. He can't run because it wouldn't go away.

"Rust."

The blond flinched as he sees the man approaches as he hears him.

"It's alright. No one would hurt you anymore." He said it gently. To the man, this is a child. A scared child whose cornered without any options. He wants to let him that he's here for him no matter what.

Rust growls, backing up further as he shuts his eyes, holding his head while his blood metal claw starts to slam against the floor.

"Rust?"

"GO AWAY!" He howled as he warns Klaus to stay away. He can't…then something is coming up from his insides to his throat. "Urgh…ACK!" Then blond expels excess blood from his mouth before he coughs and starts to lose conciseness.

"RUST!"

Soon his crimson world fades to black as he hits the ground.