The 'Casual Mai Shiranui' meme features the iconic SNK fighting game character, Mai Shiranui, swapped from her traditional kunoichi attire into modern, casual clothing. While she is globally recognized for her red ninja outfit in Fatal Fury and The King of Fighters, fan artists and official SNK illustrations often depict her in street wear, particularly a cozy red sweater. This version of Mai became a viral template used to express 'best girl' sentiments, 'girlfriend material' vibes, or simply to place a legendary fighter in mundane, relatable situations. It highlights the contrast between her high-octane battle life and a quiet, everyday aesthetic, making it a favorite for anime fans and gamers alike.