1girl, bathing, blush, breasts, brown_hair, cleavage, closed_mouth, collarbone, dars_(recolors), hair_between_eyes, hair_bun, large_breasts, looking_at_viewer, mature_female, naked_towel, onsen, orange_hair, partially_submerged, red_eyes, short_hair, sidelocks, single_hair_bun, smile, solo, towel, water, yahari_ore_no_seishun_lovecome_wa_machigatteiru., yuigahama_yui's_mother