1girl absurdres bamboo_fence blurry blurry_foreground blush breasts depth_of_field fence green_hair hair_bun highres idolmaster idolmaster_shiny_colors kuwayama_chiyuki large_breasts looking_at_viewer moon naked_towel night night_sky onsen single_hair_bun sitting sky soaking_feet solo steam towel water_drop wet_towel yuro_(7_yuro)