character: shiina yuika, keep the exact same pose, keep the exact same composition, keep the exact same expression, keep the same hairstyle, keep the same straw hat, keep the same platform sandals, change only the clothing: white t-shirt covering the black bikini top completely, t-shirt fabric not see-through, natural opaque fabric, tie the t-shirt hem at the chest area, knotted t-shirt at bust, expose the waistline, show the slim waist, black bikini bottom remains visible, beach background remains the same
