idolmaster, idolmaster (classic)
futami ami, futami mami
courreges ace
2girls, ass, brown eyes, brown hair, clothes lift, from above, lying, midriff, miniskirt, multiple girls, navel, on stomach, panties, pillow, pleated skirt, sailor collar, school uniform, shirt lift, siblings, side ponytail, sisters, skirt, skirt lift, smile, striped clothes, striped panties, twins, underwear, unzipped, yellow panties
scan, scan artifacts