1girl, ahoge, barefoot, blue_archive, blue_one-piece_swimsuit, blush, closed_mouth, collarbone, demon_horns, dot_nose, flat_chest, hair_ornament, hairclip, halo, hina_(blue_archive), hina_(swimsuit)_(blue_archive), holding, holding_whistle, horns, innertube, light_blush, long_hair, looking_at_viewer, lying_on_water, name_tag, official_alternate_costume, old_school_swimsuit, one-piece_swimsuit, parted_bangs, pink_hair, purple_eyes, school_swimsuit, solo, swimsuit, syimo, thighs, upside-down, very_long_hair, water, wet, whistle, whistle_around_neck, white_hair