ririko (zhuoyandesailaer), commentary request, highres, 1girl, aqua neckerchief, aqua sailor collar, aqua skirt, black shirt, blue serafuku, blush, closed mouth, envelope, feet out of frame, haga ayano, hand up, handkerchief, holding, holding envelope, holding handkerchief, koibumi to 13-sai no joyuu, long sleeves, looking at viewer, neckerchief, ponytail, puffy long sleeves, puffy sleeves, sailor collar, school uniform, serafuku, shirt, simple background, skirt, smile, solo, standing, thighs, turtleneck, white background