1girl, o, ahoge, ass, back, bare_shoulders, barefoot, blonde_hair, blue_eyes, blush, camui1104, eyelashes, from_behind, high_ponytail, long_hair, looking_at_viewer, looking_to_the_side, louis_arneb, one-piece_swimsuit, open_mouth, ponytail, re:zero_kara_hajimeru_isekai_seikatsu, school_swimsuit, sidelocks, sitting, solo, strap_slip, swept_bangs, swimsuit, teeth, turning_head, upper_teeth_only, very_long_hair, wariza, white_background, white_one-piece_swimsuit