One Piece: The Steelflame Admiral

[Ding! Host's soul fusion complete. The Infinite Sword System has been officially activated!] [Beginner's gift pack being delivered...] [Congratulations, Host! You have obtained Ryujin Jakka, a Zanpakuto in sealed form!] [Congratulations, Host! You have obtained a Perfect-Grade Body Enhancement Potion!] The instant the voice faded, Lin Mo felt a warm current surge from his heart through every limb. The agony in his body quickly subsided, replaced by a sense of power unlike anything he had ever felt. In his mind, he could clearly "see" an ancient katana floating silently at the center of a strange space filled with countless sword shadows. Faint, heart-stirring flames flickered across its blade. Ryujin Jakka... The Zanpakuto wielded by Yamamoto Genryusai Shigekuni, the strongest and oldest fire-type Zanpakuto! Lin Mo's breathing quickened, and his eyes shone with disbelief. He struggled to sit up and looked at his hands, newly covered in calluses yet brimming with strength. Just then, the barracks door swung open, and a tall, imposing man with short purple hair walked in. His hawk-like gaze fell on Lin Mo. "Lin Mo? You're awake. Can you stand? Don't fall behind in today's training." Looking at Zephyr, the future "Black Arm" admiral, Lin Mo took a deep breath and suppressed the turmoil within him. A sharp smile curled his lips. "Of course, Instructor Zephyr." "I'm already... itching to get started." He had arrived in this magnificent age. And this time, armed with countless legendary swords and steel flames that could incinerate all, he would redefine the Marines' "justice"!