Samurai Katana Wallpaper Design

Dark samurai-themed phone wallpaper on a black background. A single, long curved katana facing downward, with an engraved blade clearly visible and a smaller handle featuring a sageo (decorative cord). Bold red Japanese calligraphy. Leave empty space around edges--do not fill the entire screen. --ar 9:16 --stylize 150 Insert discreet watermark in the lower right corner of the image, vertical text (rotated 90°), written "aipromptlabs.online", Calibri Light font, white color with low opacity (semi-transparent), medium size. Extreme sharpness on the face, fabric texture and typography of the letters. Shot on Canon EOS R5, 50mm f/2.8, studio light.