1girl, blue_sky, bow, bronya_zaychik, caisena, closed_mouth, cloud, covered_navel, day, drill_hair, grey_eyes, grey_hair, hair_bow, hand_up, holding, honkai_(series), honkai_impact_3rd, neckerchief, one-piece_swimsuit, outdoors, pink_neckerchief, purple_bow, purple_one-piece_swimsuit, purple_sailor_collar, sailor_collar, school_uniform, serafuku, shirt, short_sleeves, sidelocks, sky, smile, solo, standing, swimsuit, swimsuit_under_clothes, twin_drills, water, white_shirt