piyopoyo, hisabisa ni atta osananajimi ga iroiro to seichou shiteirunoni nounai dake seichou shiteinakute douyou shiteiru, original, 1girl, blue eyes, blue sweater, blush, bra, breasts, brown hair, cleavage, closed mouth, clothes lift, green ribbon, hair ribbon, long hair, long sleeves, panties, ribbon, sweat, sweater, sweater lift, underwear, white bra, white panties, younger sister (childhood friend series)