1girl, alternate costume, black hair, black serafuku, closed mouth, cowboy shot, finger to mouth, floating hair, from side, grey eyes, hallway, hime cut, index finger raised, indoors, long hair, long sleeves, looking at viewer, looking to the side, midriff peek, neckerchief, pleated skirt, red neckerchief, school uniform, serafuku, shadow, sidelocks, skirt, smile, solo, very long hair, virtual youtuber, window