koyuki (2smj), koyuki (artist), kohinata sumomo, happiness!, 00s, 1girl, :d, between legs, blonde hair, blush, buttons, character name, copyright name, female focus, green eyes, hair ribbon, halftone, halftone background, hand between legs, kneehighs, long hair, long sleeves, looking at viewer, neck ribbon, open mouth, pink background, pleated skirt, red ribbon, red shoes, red skirt, ribbon, school uniform, serafuku, shoes, sitting, skirt, smile, socks, solo, v arms, wariza, white socks