1girl alternate_costume alternate_hairstyle arms_behind_back azur_lane bangs bare_shoulders black_hairband blush breasts character_doll cleavage collarbone commentary_request dido_(azur_lane) full_body grey_hair hairband highres huge_breasts long_hair looking_at_viewer navel open_mouth outdoors ponytail purple_eyes racket see-through sirius_(azur_lane) skirt smile solo sportswear standing sweat tennis_racket tennis_uniform unfinished upanishi_mariko wet wet_clothes white_skirt