After days of flying using his wind concept, Franz finally arrived at the treacherous Calm Belt. As he surveyed the vast ocean's depth with his heightened spirit sense and observation Haki, he was taken aback by the sheer number of powerful sea creatures known as sea kings roaming the area.
"Geez, it's time to learn the concept of water," Franz muttered to himself as he swiftly dived beneath the surface, concealing his aura. Meditating at a depth of 5 kilometers, he suddenly found himself surrounded by a group of sea kings, their intent to devour him evident.
With a powerful kick, Franz sent one of the sea kings flying several meters backward. "Damm, this is gonna be tough," he exclaimed. Utilizing his concept of water, Franz could now move and breathe freely underwater. Taking advantage of his momentum, he mounted one of the sea kings and unleashed a barrage of punches, shattering its skull and causing it to perish. But his victory was short-lived as another sea king retaliated, its tail slamming into Franz, leaving him bloodied and bruised.
"Nice one, bro. Time to get serious," Franz taunted with a smirk.
Reinforcing his body with armament Haki and relying on his observation Haki to predict his opponents' movements, Franz engaged in a fierce battle with multiple sea kings at once. Blood spilled freely, painting the underwater scene in crimson hues. To make matters worse, more sea kings were drawn to the carnage, joining the brawl in an attempt to devour him. Undeterred, Franz continued to fight without hesitation, knowing that each battle would further enhance his understanding of the concept of water.
Months passed, and thousands of sea kings fell to Franz's relentless onslaught beneath the waters of the Calm Belt. The blood spilled reached the surface, creating a crimson spectacle that caught the attention of the World Government. An investigation team, led by Marine Admiral Kizaru, was dispatched to unravel the mysteries behind this phenomenon.
Emerging from the blood-stained waters, Franz, his violet hair drenched in red, stood upright in the air. The sight stunned the marines, who witnessed what seemed like a purple demon rising from the depths of hell.
"Hmm, interesting," Kizaru mused.
With the marine fleet brought to a halt, Kizaru shouted, "Oi, stop and hold! Who are you?" All marines remained on high alert, especially Kizaru, who sensed the dangerous aura emanating from Franz. The fact that he could fly without using Geppo further intensified the threat.
Franz glanced at the other ships and counted a total of seven. He then calmly replied, "Excuse me, Sir Admiral. I was lost in thought for a moment. My name is Franz D. Azrael, and it's a pleasure to meet you, sir."
Kizaru, still on guard, asked, "Do you have any idea why the sea turned red?" Franz snapped back to reality and responded, "I apologize, sir, but I believe it's the blood of the sea kings I've slain during my underwater training."
The marines, including Kizaru, widened their eyes in disbelief, a cold sweat running down their spines. Clearing his throat, Kizaru said, "I'm sorry, but we need you to accompany us to Marine Headquarters for further questioning."
Annoyance flickered in Franz's eyes as he asked defiantly, "What if I don't comply, sir?" Kizaru met his gaze, smiled, and replied, "Then we won't have a choice but to use force."
Franz grinned and challenged, "Oh, let's have a dance." In an instant, Kizaru vanished, attempting to slash him with his light sword. But to his surprise, Franz blurred into multiple images, evading the attack effortlessly. With lightning speed, he delivered a powerful kick to Kizaru's back, sending him crashing onto a ship, unconscious and gravely wounded.
Shock and disbelief spread across the faces of all the marines present. Admiral Kizaru, renowned for his strength and speed, defeated in a single exchange. Franz then cast a water jet to cleanse his body and calmly stated, "Please advise your superiors to stay away from me, because even the World Government won't be able to stop me from turning your headquarters into hell."
Unbeknownst to Franz, the marines couldn't help but admire his perfect appearance and the immense power he displayed. Fear mingled with their admiration. He appeared like a deity descended upon the world.
With his warning given, Franz decided it was time to depart, setting his sights on the legendary Gold Island in the East Blue. Three days later, in the halls of the Marine Headquarters, tension filled the air as Sengoku, Garp, Akainu, Tsuru, and Aokiji gathered for a meeting.
"This purple demon is indeed a formidable opponent. With just one move, he defeated Borsalino. Not even the Yonko can boast such a feat," Sengoku remarked, rubbing his temples in contemplation.
"Tsuru, utilize our intelligence network to track his whereabouts. Garp, Aokiji, observe him but refrain from engaging immediately. We need to ascertain his objective," Sengoku instructed.
And so, the stage was set for a clash between Franz, the Purple Demon, and the might of the Marine forces. The world watched with bated breath as Franz continued his journey, leaving behind a trail of awe and destruction. His haki-infused attacks and enigmatic presence ensured that his story would be etched in the annals of history.