july13th, crueltear, exelica, trigger heart exelica, white legwear, 2girls, arms behind back, back, back-to-back, back cutout, blush, breasts, clothing cutout, dated, elbow gloves, flat chest, gloves, headgear, holding, legs apart, looking back, mecha musume, medium breasts, multiple girls, one-piece swimsuit, purple hair, red eyes, red hair, school swimsuit, short hair, simple background, single glove, small breasts, standing, swimsuit, swimsuit costume, thighhighs, white background, white one-piece swimsuit, white school swimsuit