Inside the room of a high school girl who has been studying all night

Inside the room of a high school girl who has been studying all night. A close-up of her sitting in a chair, stretching as far as she can with her arms raised as if to soothe her tired body. She has short black hair. She is wearing cute pajamas. On the desk is a laptop, mouse, and a can of coffee. The window is half open, letting in fresh morning sunlight. The curtains hanging on the window are fluttering in the breeze. Manga-style line drawing using the G-pen technique. Bold lines of various thicknesses for the outlines, and thinner lines for the details. Watercolor texture in the background.