1girl, alcohol, animal_ears, bathing, black_hair, breasts, cup, erune, flower, granblue_fantasy, hair_between_eyes, hair_ornament, ilsa_(granblue_fantasy), large_breasts, long_hair, looking_at_viewer, minaba_hideo, naked_towel, onsen, red_eyes, sakazuki, sake, smile, solo, steam, towel, transparent_background, water, wet, wet_hair