Masterpiece, ultra-detailed Japanese ukiyo-e inspired illustration of a fearsome Oni Samurai wearing an intricately patterned luxury kimono with ornate gold floral embroidery and large blue roses, traditional Hannya/Oni mask with curved horns, white tied-up hair, carrying dual katanas with highly decorated hilts. A massive black panther companion with glowing red eyes and bared fangs stands beside the warrior in an aggressive pose. Ethereal Japanese ghost flames and swirling smoke surround both figures, creating a supernatural aura. Rich indigo, cobalt blue, black, gold and ivory color palette with aged parchment washi paper background, traditional woodblock print texture, ink linework, hand-painted aesthetic, highly detailed textile patterns, botanical roses, dramatic composition, mythological Japanese folklore, dark fantasy, elegant yet terrifying, museum-quality ukiyo-e artwork, sharp intricate details, authentic Edo-period print style, vertical composition, 8K.