masterpiece,best quality,extremely detailed,(Cover of Onsen Magazine:1.5),10girls,early teen,small_breasts,various_hair_style,various_hair_color,(wet_hair,wet_skin),pubic hair on the verge of growth,naked,Open-air bath at a hot spring hotel,Various happy expressions,The girls are enjoying the hot spring to their heart's content,shared_bathing,night,starry_sky,pussy_peek,