imari youko, ruri no houseki, absurdres, highres, official art, 1girl, album cover, apron, black socks, blue hair, blush, book, book stack, brown hair, closed mouth, collared shirt, colored inner hair, cover, desk lamp, eraser, glasses, green apron, hair between eyes, holding, holding rock, lamp, long sleeves, looking at viewer, mechanical pencil, multicolored hair, open book, pencil, rock, semi-rimless eyewear, shirt, short hair, sitting, socks, soles, solo, toes, under-rim eyewear, wariza, white shirt