score_9, score_8_up, score_7_up, score_6_up, 1girl, solo, tilted angle, 20 years old, female student, young and cute, very long black hair, low twintails, nerdy girl, wearing glasses, smooth skin, detailed eyes, dreamy eyes, looking down, frawn, slightly angry, on the table, fully concentrate on reading books, looking at the book, pen, pencil, ruler, stacks of books on side, table lamp, coffee cup, oversized T-shirt, large breast, tilted view, sex from behind, blush, twitching, motion line, sweaty, warm lighting, sunlight from the window, Expressiveh