Create a highly detailed and realistic full-body image of a character viewed from the front. The character is an older muscular man with a long, flowing white-grey beard. His hair is also white-grey, and he has traditional Japanese tattoos covering his chest and arms, with motifs like koi fish and cherry blossoms. He is wearing a bandana, sunglasses, a loose, open Hawaiian shirt with a floral pattern, and black jeans with a worn leather belt featuring a prominent gold buckle. On his feet are thick-soled sandals. The man should exude an aura of aged strength and wisdom. The background is a soft gradient, and the image should be proportionate, reflecting a 9:16 scale.