1girl, arm behind back, blue serafuku, braid, chalkboard, choker, classroom, embarrassed, facing viewer, finger to mouth, hair over one eye, hair ribbon, hairband, halo, hand up, heart, indoors, looking away, looking to the side, medium hair, multicolored hair, neckerchief, nervous, open mouth, ribbon, sailor collar, school uniform, serafuku, single braid, skirt, solo, two-tone hair, white choker, white hairband, white neckerchief, white ribbon, white skirt