A hyper-detailed tattoo design for a vertical forearm

A hyper-detailed tattoo design for a vertical forearm. A lone samurai sits in a perfect, meditative Seiza pose, his eyes closed in serene contemplation. He grips his unsheathed katana with both hands, the blade's tip resting calmly on the ground beside him. The samurai's upper body and face are rendered in a pristine, smooth traditional Japanese (Irezumi) style with bold lines. However, his lower body and the ground beneath him are dissolving into a chaotic storm of fierce, dynamic, painterly brushstrokes in black, grey, and deep crimson red, suggesting untamed energy and rage. His traditional samurai armor should feature subtle, clean imagery of a still lake or a full moon to symbolize his inner peace. The composition must be vertical to fit the forearm, with the calm at the top and the storm at the bottom. Pure white background. Black and grey ink with one single color accent: deep crimson red in the storm."