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Asian muscular man with short black hair and clean-shaven face stands centered in a mirror selfie pose, holding dark smartphone right hand. Shirtless bare chest abdomen defined abs broad shoulders wearing black athletic shorts waistband visible white underwear waistband partially obscured. Indoor room light wood-paneled wall background warm indoor lighting neutral palette black white brown. Vertical portrait 13:19 aspect ratio full-body head to mid-thighs centered composition confident casual mood mirror selfie aesthetic social media post style., shot on iPhone 15 Pro main camera, authentic smartphone computational photography, natural Smart HDR and true-to-life skin texture, vertical 9:16 Xiaohongshu lifestyle feed, bright clean everyday scene, unretouched phone photo with subtle sensor grain, trendy Chinese internet 网红 aesthetic, candid influencer energy, phone held naturally in one hand for selfie, phone visible in frame, wearing underwear or swim trunks, covered genitals, no frontal nudity, a single uninterrupted photograph only, no written words or typography anywhere in frame, no captions, no app UI, no social-media post layout, no screenshot borders