1girl, armlet, arms_on_head, arms_up, bikini, blue_hair, breasts, brown_eyes, cleavage, closed_mouth, dayshiart, from_side, large_breasts, looking_at_viewer, lying, navel, on_back, original, rope, short_hair, sideboob, simple_background, smile, solo, strap_gap, swept_bangs, swimsuit, thigh_strap, wet, white_bikini