[5 minutes before...]
Allen Walker was currently waiting for the <Supreme Assassin> to arrive while practicing with the arsenal of abilities contained within his <Supreme Order> ability.
Iris Aria was still surfing on the internet and what she was viewing on the internet was something that even Allen didn't know. Not because he can't but because he didn't want to since it would be a breach of privacy. Although, if Allen asked Iris, she wouldn't reject Allen.
Allen Walker was the strongest in his world so he dared to remain complacent when facing the upcoming threat of the <Supreme Assassin>. For him, the <Supreme Assassin> alone wasn't a threat to him.
Allen suddenly had a bright idea to mess with the <Supreme Assassin> just for the sake of curing his boredom. Allen went downstairs since his room was on the second floor of his house.
After arriving at the first room, Allen went to the living room as he spotted the garbage bin. Allen then programmed a floor mat to appear in front of him using his <Supreme Programmer>. Using <Supreme Hacker>, he hacked the wooden tile under the garbage bin to turn it into a metal tile with the message "It's A Prank!" on it.
Allen lifted the garbage bin and placed the floor mat under the garbage bin to conceal the metal tile. Allen knew that if the <Supreme Detective> was here, he or she would without a doubt think that the garbage bin and floor mat combination was under the suspicion of hiding a hidden trapdoor.
Allen had the <Supreme Detective> ability so he knew that in some cases, it was common for others to conceal a trapdoor with a floor mat and something above it such as a tabletop or garbage bin.
But Allen also knew that only a madman would place a floor mat under a garbage bin.
After placing an obvious trap, he proceeded to create a scenario where there wasn't any person at the house, and to enact such a scenario, he had to turn off all light sources and close all windows.
Allen went upstairs to remind Iris to remain silent and inform her about his prank but he only got a nod from her as her response.
After closing all windows and turning off all light sources, Allen went to the door or the entrance of his house to lock the doorknob. Afterward, he waited for the <Supreme Assassin> to enter his house as he sat on the sofa while activating his <Supreme Philosopher> ability.
...
*swoosh*
Allen saw that his door was cut into several pieces. A dark silhouette entered his house as he or she stepped on the fragments of his door.
He couldn't help but have his heartache since his door was expensive. Even if his house looked average, the materials used to build it weren't average. The door alone cost two thousand dollars since the wood used to build it was an aged thousand-year-old wood that was as durable as chromium.
'The dagger that person was used was able to cut wood that was as hard as chromium so it should be expensive. I'll steal that from him or her as compensation for my broken door.'
With that thought in mind, Allen observed what the person he deemed as the <Supreme Assassin> would do in his house. Even though Allen was sitting on the sofa that was in front of the <Supreme Assassin>, the <Supreme Assassin> didn't notice Allen.
Not because the <Supreme Assassin> was incapable of sensing the presence of others but it was due to the <Supreme Assassin> being incapable of sensing something that doesn't exist.
Yes, Allen had erased his existence from his world's records of reality.
By using <Supreme Philosopher> to question his existence, his existence would temporarily be erased from reality itself as if he didn't exist in the first place. Allen had complete control throughout his <Supreme Philosopher> ability so he didn't have to worry about accidentally erasing his existence permanently.
If Allen had only concealed his presence with the use of his <Supreme Spy> ability, there would be a fraction of a chance that the <Supreme Assassin> would be able to detect him so he used his <Supreme Philosopher> instead since he didn't want to take any chances.
*tap* *tap*
The <Supreme Assassin> walked around his house as she surveyed his house to find the trapdoor that would lead to the secret lair of the <Supreme Inventor> until she found the suspiciously placed floor mat under a garbage bin.
The <Supreme Assassin> threw the garbage bin to her side and lifted the floor mat. After lifting the floor mat, below the floor mat revealed a metal tile that had a text written on it that said; "It's A Prank!"
The dark silhouette shook, indicating its agitation but before the <Supreme Assassin> could complain, Allen already made his move as he slashed his hand forward.
Allen had used his <Supreme Swordsman> ability to transform the air into a blade and launched it towards the neck of the <Supreme Assassin>. A compressed air blade headed towards the neck of the dark silhouette, decapitating it.
The head of the <Supreme Assassin> separated from her body as it rolled in the air until it fell to the ground. When the head of the <Supreme Assassin> fell on the ground, Allen could now see the face of the <Supreme Assassin>.
He couldn't help but lament about how he shouldn't have killed such a beauty. After all, he can't send a dead body to a brothel even if it was a beauty.
The <Supreme Assassin> had yet to pay for his broken door but with his <Supreme Analyst> and <Supreme Problem Solver>, Allen already had a solution to his problem.
Using his <Supreme Tailor>, Allen stitched the head of the <Supreme Assassin> back to her neck. Using <Supreme Embalmer> and <Supreme Mortician>, Allen preserved the dead body of the <Supreme Assassin> so that it wouldn't decay.
With this, Allen could sell the <Supreme Assassin>'s dead body on the dark web and earn a lot of cash since even if she was dead, she was still beautiful. Most probably, a lot of necrophiles wouldn't hesitate to bid for her dead body, earning him some cash to replace the broken door.
Of course, Allen didn't forget to take the pair of assassination daggers as his loot.