黒マスクと開いた白シャツ、チェックスカートのしゃがみ自撮り

Candid vertical smartphone selfie photo of a cute adult Japanese woman, clearly visibly over 20 years old, fictional person not based on anyone real. She wears a black cloth face mask covering nose and mouth, a white button-up dress shirt unbuttoned deep at the chest so natural full cleavage and valley are visible through the open placket, and a short plaid checkered mini skirt. Squatting / crouching low pose facing the camera, holding the phone at arm's length for a selfie, eyes looking straight into the camera lens above the mask. Soft cute adult kawaii face: bright warm eyes, soft cheeks, youthful-adult beauty not childlike, not doll-oversized eyes. Natural dark hair, slightly messy everyday styling. Dim indoor room with lived-in clutter — soft ambient lamp light, ordinary apartment vibe, slightly messy background (clothes, shelf, everyday objects out of focus). Real iPhone snapshot aesthetic: mild sensor noise and grain, slight JPEG compression, uneven auto-exposure, soft natural focus not razor-sharp beauty retouch, pores and skin texture visible, no plastic wax skin, no beauty-filter smoothness, awkward candid framing, slight tilt okay. Natural body proportions, realistic fabric folds on shirt and skirt, five fingers if hands visible, no extra limbs. Plain matte phone case edge only if visible, no brand logos, no watermarks, no readable text anywhere. Mild sensual adult fashion mood, clothed, not nude, not explicit. Looks like a casual late-night SNS post photo, not studio, not stock, not AI-polished.