uno usaya, plana (blue archive), blue archive, commentary request, 1girl, anal, anus, ball, black eyes, black hairband, black serafuku, black shirt, black shoes, blue background, blush, bow, censored, closed mouth, clothes lift, from behind, hairband, halo, mosaic censoring, multicolored hair, no panties, red halo, red pupils, school uniform, serafuku, shadow, shirt, shoes, solo, speech bubble, squatting, steam, struggling, trembling, two-tone hair, white bow, white hair