That's so Swell!

'What? Eradicate this world? But- I just got here and how do I even do that with a colony of spiders? How can I summon it in the first place according to this.. 'system' an SCP.'

[Phrase to summon a SCP is to say "SCP-(Number Classification)"]

'Well that's good information to remember. It sure is getting late at night so I might as well start sleeping.'

....

Masaru wakes up to the sounds of wood breaking and shouts.

"IN THE NAME OF THE EMPIRE, YOUR CRIMES FOR TAX EVASION IS PUNISHABLE!"

"SIR PLEASE SPARE US! WE DIDN'T HAVE ENOUGH MONEY!"

That voice seemed to be Hinata's but muffled sounds of crying in some corner is coming from a huddled up Aiko.

Masaru attempts to walk towards the commotion and sees his father being beaten to death by a man clad in iron. With an attempt to save his father, he calls out to SCP-452 to save him. It was silent.

The knight noticed Masaru and merely scoffed and not thinking about anything strange when Masaru put his arm out straight forward. From the walls, hundreds if not thousands of black widow spiders broke out from the walls and crawled onto the knight's face, biting his eyes, crawling into through his nostrils and ear canals biting him in the inside as well. Screams of pure agony was heard and other guards came into the house to check on what was happening. Mercy wasn't an option. The knights that came through the door was met with hundreds of SCP-452 hanging from the door and jumped into their mouths and started biting their throats, causing it to swell as venom was going through their body. Bodies laid all over the floor, taking their last breaths to curse the child in front of them had now gone to sleep.