Design a detailed, all Black full arm sleeve tattoo featuring a traditional Japanese theme. The central figure is a fierce, heroic Japanese samurai warrior in full armor, wielding a katana. The samurai is positioned in a dynamic stance, as if preparing for battle, with intricate armor details like gold accents (only hinted in black shading) and ornate plating. Surrounding the samurai, delicate cherry blossoms bloom in full detail, their petals scattered across the sleeve with soft, swirling wind patterns. In the background, traditional Japanese structures, such as a pagoda, are subtly integrated, standing tall against a backdrop of misty, towering mountains that dominate the upper arm and shoulder area. The sleeve also includes a highly detailed, intimidating Oni mask positioned on the inner forearm. The Oni mask has sharp, exaggerated features with heavy black shading, showing off its menacing grin and fiery eyes. Thin smoke or mist trails from the mask, weaving around the sleeve and merging with the surrounding elements. The overall design flows naturally, with the elements blending into each other seamlessly, using dark, dense shading to create depth and contrast, while maintaining a sense of movement and balance throughout the arm tattoo idea