Three Down, One Left

Tatsumi, Lubbock, and General Liver suddenly stopped. The three of them coming to a silent agreement had Lubbock had set up more wires in addition to the wires he set up while fighting Liver as soon as he saw the man's weapon and attire. Tatsumi flinched when seeing Lubbock's actions and looking at Masaru's weapon in front of them. That was all it needed for him to become... unstable. Or at least, that's what he would've become if it wasn't for Lubbock's information about Masaru's skills. He could barely keep himself from charging and attempting to attack Masaru to avenge Bulat.

Lubbock's wires, while they may be visible, touching them and getting a cut, no matter how small will destroy the heart. At any moment, when Masaru moves or even his muscles twitch, he would position his wires around Masaru's individual muscles to prevent him from moving.

....

'SCP-452 and SCP-625 help me kill these three in front of me...'

Thousands of spiders came from the sides of the boat and started crawling towards the trio while seventeen rodents came from the doorway that leads to the inside of the boat. General Liver immediately sent the water dragon towards Masaru to which Masaru activated a dark barrier that stopped its assault. The barrier pushed the wires around Masaru in the process, allowing Masaru to move. Liver, using the teigu on his finger and manipulating the water around the boat, creating more dragons. With the thought of Masaru not being able to keep up his defense, unleashes the dragons towards Masaru's barrier.

Unable to do anything towards Masaru, Lubbock decided to target the mice and spiders despite how small they were, the wires could've destroyed their hearts no matter how small it was. But, as the SCPs passed through the invisible wires, they stopped and layed on top of the wooden boards, only for them to rise back up. Much to the confusion of Lubbock, SCP-625 ran towards Lubbock's ankles and with their claws, they cut out his radial slabs while leaving the bones intact. With flesh missing, SCP-452 climbed into Lubbock's injuries, thousands of bites and venom coursing through his body. The amnestic effect was overwhelmed from the spider's venom and bites. Screams bellowed from the boat. And then the boy lays on the wood. Two down, two to go.

....

Disabling the barrier with one simple swing with Masamune, Masaru sprung towards Liver to then pierce through his throat.

The dragons were too slow to catch up to Masaru.

Liver couldn't utter a single word or a sound. Masaru pulled out his nodachi, leaving Liver with his blood flowing through the holes left behind. Liver collapsed with eyes drawn towards the back of his head. Standing nearby the limp corpse, Masaru looked for the boy with average looks but couldn't find him. There was however a large steel sword laying on the ground. Few minutes have passed and yet he still couldn't find him. Although he couldn't find the boy, he did find several passengers who seemed to have recently woken up. He, however didn't spare them the time and gave them a longer... "hospital stay".

....

Tatsumi had barely survived, inches away from death. Swimming for his life, it felt like hours, draining away every little energy he had from the fight with Nyau. But holding onto the wills of those who died on that ship, he swam for safety, looking for land to contact Night Raid.