1girl, arm_garter, arm_up, armpits, azuma_(sospower73), bikini, blue_archive, blue_sky, blush, breasts, contrail, eyewear_on_head, feet_out_of_frame, floating_hair, frilled_bikini, frills, halo, hifumi_(blue_archive), hifumi_(swimsuit)_(blue_archive), innertube, light_brown_hair, looking_at_viewer, navel, official_alternate_costume, peroro_(blue_archive), sky, small_breasts, smile, solo, stomach, sunglasses, swimsuit, teeth, twintails, upper_teeth_only, wing_hair_ornament