1girl, arm_up, bikini, blue_sky, blush, breasts, cloud, collarbone, day, feet_out_of_frame, frilled_bikini, frills, hair_ornament, hairclip, long_hair, low_ponytail, masmas_(bugi), nijisanji, open_mouth, outdoors, pink_bikini, pink_eyes, pink_hair, shading_eyes, shiina_yuika, shiina_yuika_(6th_costume), sky, solo, swimsuit, virtual_youtuber, water