piyopoyo, hisabisa ni atta osananajimi ga iroiro to seichou shiteirunoni nounai dake seichou shiteinakute douyou shiteiru, highres, 1girl, black skirt, blue eyes, bow, bowtie, breasts, brown hair, collared shirt, green bow, green bowtie, green ribbon, hair ribbon, holding, holding phone, long hair, phone, pleated skirt, ribbon, school uniform, shirt, skirt, solo, sweat, white shirt, younger sister (childhood friend series)