character: shiina yuika, keep the same composition, keep the same outfit white t-shirt tied at chest, keep the same black bikini bottom, keep the same straw hat, keep the same beach background, change pose: right foot on tiptoe with heel raised, lift hips higher accordingly, push waist upward more, keep both arm poses but adjust right arm angle to align with left leg and extend forward, bring right arm forward, make water splashes larger and more prominent, turn face to the right side looking down toward waist, expression change: innocent cheerful grin, wide open mouth, big happy smile, playful joyful face
