Her head falls on his shoulder, her lips slightly parted. The book, that she had been holding droops nearly slipping out of her fingertips, and Cedric chuckles softly as he closes it gently. He keeps his shoulder as still as possible. Hermione sleeps on, small huffing sounds of her breath escaping. It's not quite a snore, but close. Had he been inclined, Cedric would have made a note to tease her terribly for it. As it was he thought it sweet and amusing that his girlfriend almost snored.
Slowly, Cedric puts away their homework, piling sheets of parchment together in an orderly pile. Then he went to put away quills, lifting his wand outside his robe sleeve, flickering it about as he whispered as quietly as he could. Once everything was carefully put in their school bags, he carefully grabbed at his discarded robe, transfigure it into a blanket. He wrapped Hermione up, smiling when she snuggled into his side even further. He leaned his head against her's, noting with faint approval that she smelled of roses, a simple but girly thing that most wouldn't have noticed. A faint nod that despite how serious of a girl she was, Hermione was very feminine in a subtle way. Cedric let out a sigh of contentment, wrapping one arm around her waist while the other went to his school bag.
He then took out The Silver Chair, and read on in the last bit of the afternoon sunlight.