1girl, ahoge, armpits, arms_up, bikini, blue_bikini, blush, breasts, brown_eyes, full_body, long_hair, looking_at_viewer, mayafufu, navel, onii-chan_wa_oshimai!, open_mouth, oyama_mahiro, pink_hair, simple_background, small_breasts, smile, solo, swimsuit, tiptoes, white_background