Takes place in the sixth book.
Harry sat in his dorm with Ginny. She bustles around, organizing the room. Then she bends over to pick up a small piece of paper, revealing her tight jeans. Harry stood up from his bed, and walked forward. Before Ginny stood up, Harry reached up her shirt and grasped her breasts. She let out a gasp of surprise, but went along with it, grinding her hips against Harry's crotch, drawing out an erection. Harry slid out his dick, and then slid Ginny's pants down to her ankles. She let out a whisper for him to continue, removing her shirt, and Harry thrust into her asshole. She let out a gasp, and Harry started sliding in and out, with his hands locked on her breasts as a handhold. She was pushed forward and back, letting out little sounds whenever she went forward. Harry reached down to her cunt and started fondling it, before drawing his wand and thrusting it in. Ginny gasped at the penetration, and reached down to start ramming the wand in and out. Harry slammed his hips against her tight ass, and felt her hips push against his dick inside her. She came first, spurting onto the wand and making it let out a bolt of red light. Harry came second, grasping her nipples tighter and releasing his seed into her ass. He pulled out and let the rest out over her bare back. She gasped at the feel, and Harry brought her around so she faced him on her knees. She got the idea and grabbed his dick, working it in her hand until it was hard. Once Harry was ready, Ginny slid his dick into her mouth. Harry groaned as Ginny started sliding it in and out if her mouth, rubbing it with her tongue. Harry reached down and grabbed her breasts, squeezing hard. She started sucking harder, and reached down to continue driving Harry's wand in and out of her. They came together, and Harry pulled out of her mouth and released over her breasts. Ginny rammed the wand in harder, and spurted over the handle again. Harry walked over to the shower and turned it on, stepping in. Ginny joined him a second later. Harry turned to her, and pushed her up against the wall with a kiss. She mumbled through the kiss "You have the sexual stamina of a horse" he grinned and thrust into her cunt. She gasped and started to work her hips in motion to Harry's, with the shower washing over them. His hips slapped against hers as he slid in and out, and he grabbed onto her breasts and pinched the nipples. Harry came hard, emptying into her cunt, drawing out her own orgasm. She spurted along the length of his dick, and their ejaculations mingled. Harry kissed her once more, and they got back to washing.