Distributing flyers is the first job all demons operating in the human world must undertake.
As mentioned before, in modern times, no one manually researches forbidden information or performs demon summoning rituals by drawing Magic Circles to form contracts and cooperate with demons.
Therefore, delivering flyers with simplified Magic Circles to humans is an essential task for modern demons.
This task is usually completed by Retainers and doesn't require demons to do it themselves.
However, High-Class Devils generally make their Retainers do basic work for a period to hone them.
Once they are familiar with grassroots work, they then officially begin accepting requests from those with desires, using Magic Circles to earn rewards by fulfilling those requests.
As a novice demon, Yukinoshita Yukino naturally had to start by learning this job.
Of course, she didn't need to smile and hand out flyers to passersby in crowded places like employees from various industries on the street.
She only needed to deliver the flyers one by one to the designated targets' addresses during the late-night, deserted hours, slipping them into mailboxes or under doors.
"I just need to deliver the flyers to their homes when people are asleep?"
Upon learning this, Yukinoshita Yukino unconsciously breathed a sigh of relief.
Asking a young lady who isn't good at social interaction to hand out flyers on the street while maintaining a smile would indeed be too difficult for her.
"There's no choice; we can only act at night, unlike Retainers who can work day and night without hindrance," Leo explained to Yukinoshita Yukino. "Demons can only operate at night. Daytime is for angels and gods. If you dare to hand out demon flyers on the street during the day, then if you encounter someone from the church, you'd better pray for good fortune. They certainly wouldn't mind sending an Exorcist to take you away."
"Don't make it sound so scary!" Yukinoshita Yukino's face stiffened slightly, and she said angrily, "I don't want to die again!"
Even now, recalling the scene of being impaled by Waddell that night, Yukinoshita Yukino still felt a lingering fear.
Even if others encounter dangerous situations, as long as they survive afterward, it's just an experience closest to death.
But she had genuinely died once, and that feeling was not pleasant at all.
Therefore, Yukinoshita Yukino truly did not want to experience the same thing again.
"Then keep this safe."
Leo suddenly took out a bracelet-like object and handed it to Yukinoshita Yukino.
"What is this?"
Yukinoshita Yukino took it, examining it while asking.
"It's a Light Power Detector, capable of detecting high concentrations of light power nearby. Once it starts alarming, it means either an angel or a Fallen Angel has appeared nearby, or a Church Exorcist capable of using light weapons has appeared," Leo said to Yukinoshita Yukino. "Chiba City is the Church's territory after all, so it won't be too convenient for demons to operate here. If you wear this, you can avoid many risks."
This was something Leo had used when he was young, brought from the Underworld by the demon who was responsible for him at the time. It wasn't a precious tool, but it was very practical.
"You don't use this?"
Yukinoshita Yukino asked with some surprise and doubt.
"I don't need it anymore," Leo said with a confident smile. "Now it should be the people from the Church hiding from me, not me hiding from them."
Even if they can use the light power of angels to fight, the Church's Exorcists would not dare to casually provoke a High-Class Devil.
No matter how many battles the opponent has experienced, or how strong a warrior they are, as long as they are still human, still flesh and blood, they must act as a team to have any chance of success against a High-Class Devil.
Therefore, unless he encounters legendary warriors or top-tier Exorcists considered trump cards by the Church, with Leo's current strength, he can retreat calmly even if besieged.
This was his former self; now, not only has his magic power greatly increased, but he has also advanced from two wings to six wings, making him immeasurably stronger than before.
Coupled with the sudden awakening of the Blazing Heaven Thunder Prison, the Church personnel stationed in Chiba Prefecture are no longer a concern for him.
"And this, take it with you too." Leo gave Yukinoshita Yukino another device. "This is an active device used to detect qualified trading targets. Simply put, it's a detector to scan where our potential clients are. You just need to deliver flyers according to the location displayed on the device."
After giving all the instructions, Leo sent Yukinoshita Yukino away.
Although Yukinoshita Yukino felt somewhat uneasy, she didn't want Leo to see her as weak, so she took a deep breath, spread her demon wings, and flew out of the manor.
Leo watched Yukinoshita Yukino leave, then returned to the underground training room.
"Swish!"
As six demon wings unfurled behind Leo, he once again flew into the air of the training room.
He was about to begin training his ability to wield the god-slaying tool.
"Fire!"
At Leo's command, astonishing explosive flames instantly erupted around him.
The explosive flames turned into a fiery wave, spreading like a crimson avalanche, instantly igniting the entire underground training ground, transforming it into a sea of fire.
"Water!"
With another command from Leo, intense water vapor immediately condensed out of thin air, causing a towering torrent to appear.
The torrent, like a great flood descending from the sky, crashed onto the ground, engulfing everything in its path, turning the sea of fire into an ocean and extinguishing countless flames.
"Ice!"
The next second, snowflakes flew, and cold frost fell, causing a blizzard to sweep across the entire area.
Instantly, the ocean filling the basement froze at a visible speed, accompanied by a series of teeth-gritting solidification sounds, completely transforming into a world of ice and snow.
"Thunder!"
Leo raised his hand, like a monarch commanding the world, emitting an astonishing aura that caused the basement ceiling to vibrate, and rumbling dark clouds to form out of thin air.
Lightning flashed and thunder roared within the dark clouds, and countless fierce bolts suddenly struck, shattering the ice on the ground and ravaging the entire training ground.
The scene was like a legendary apocalypse compressed into this small area, directly triggering the basement's barrier, making it tremble precariously.
Not long after, Leo caused strong winds to rise within the dark clouds again, sending A tornados crashing to the ground. The ravaged and destroyed floor also turned into countless flying gravel, swirling into a sandstorm, a dust storm, its power comparable to a true natural disaster.
"Is this the power of the Blazing Heaven Thunder Prison, which ranks second among god-slaying tools, surpassed only by the legendary Holy Lance?"
Leo looked at the underground training room, which was almost reduced to ruins, and felt somewhat shocked himself.
Manipulating various attributes like earth, water, wind, and fire is not a difficult task for beings who master supernatural powers.
For one, Leo himself could manifest these supernatural phenomena with magic power. However, due to a lack of superb magic control techniques and strong imagination, their power was not as strong as condensing magic power into barrages and beams.
However, Leo could confidently say that even the powerful beings skilled in manipulating elemental forces could not cause destruction comparable to the Blazing Heaven Thunder Prison.
The Blazing Heaven Thunder Prison manipulates natural forces related to these attributes, rather than the attributes of earth, water, wind, and fire themselves. The essence of its power is interference with the world and nature.
This can be seen from the Blazing Heaven Thunder Prison's ability to control the sky and climate. Without this level of power, it would not be the second-ranked god-slaying tool, becoming one of only four high-tier god-slaying tools currently capable of destroying a country or even having a significant impact on the world.
"Although my Blazing Heaven Thunder Prison has only just awakened, in terms of destructive power, even a Highest-level Demon would probably not dare to underestimate it, right?"
After the shock, Leo became excited.
"Indeed, taking Yukino as a Retainer, my biggest gain was neither the increase in magic power nor the improvement in rank, but the awakening of the god-slaying tool!"
The increase in magic power and the improvement in rank gave him the strength to be among the upper echelons of High-Class Devils, but the awakening of the Blazing Heaven Thunder Prison gave him the ability to challenge those stronger than him across ranks!
Leo made the judgment almost immediately.
"As long as I can skillfully use the Blazing Heaven Thunder Prison, my power can definitely threaten a Highest-level Demon!"
This is merely the result of skillfully using the god-slaying tool.
A god-slaying tool is a power with infinite possibilities. It constantly changes and evolves, becoming stronger and stronger, feeding on the wielder's thoughts.
Driven by the wielder's will, the strength of a god-slaying tool's power is generally determined by the strength of that will.
If one day the wielder's will becomes strong enough to defy the world's flow, and their spirit undergoes drastic changes, transforming their joy, sadness, happiness, sorrow, fear, and other emotions into power, pushing the god-slaying tool to its extreme, they will reach the ultimate realm of the god-slaying tool—"Juggernaut Drive."
That is a realm of power capable of disrupting the world's balance, known as forbidden power.
Once he reaches that realm, Leo might be able to contend with the Demon Lords of the Underworld, directly joining the ranks of the strong in this world.
This is the terrifying aspect of a god-slaying tool, or rather, the terrifying aspect of a god-slaying tool. The power to annihilate gods and demon lords is no exaggeration.
Therefore, when the Blazing Heaven Thunder Prison awakened, Leo knew that his future reliance would no longer be his demonic power, but the second-ranked god-slaying tool in this world.
"I must master the Blazing Heaven Thunder Prison as quickly as possible; only then can I glimpse the realm of Juggernaut Drive."
With this thought, Leo continued to unleash the power of the god-slaying tool, ravaging the basement, causing continuous apocalyptic roars in the scene.