Imagine Mikasa Ackerman in the style of Vincent van Gogh, depicted in a highly detailed portrait. Her expression is fierce and intense, embodying aggression. She wears a vivid red scarf that stands out against the textured swirls reminiscent of Van Gogh's technique. The background is a vibrant yellow, providing a dramatic contrast, with hints of bold, swirling brushstrokes typical of Van Gogh's artwork, blending anime aesthetics with post-impressionist flair.