1girl, bare_arms, bare_shoulders, bikini, bikini_skirt, black_bikini, black_hair, blue_archive, collarbone, flat_chest, hairband, halo, hiroki_(yyqw7151), looking_at_viewer, mashiro_(blue_archive), mashiro_(swimsuit)_(blue_archive), navel, official_alternate_costume, purple_eyes, short_hair, simple_background, solo, stomach, swimsuit, white_background, white_hairband