1Q84 Book 1: April - June by Haruki Murakami

When she woke, she realized what a serious hangover she was going to have. Aomame never had hangovers. No matter how much she drank, the next morning her head would be clear and she could go straight into her next activity. This was a point of pride for her. But today was different. She felt a dull throbbing in her temples and she saw everything through a thin haze. It felt as if she had an iron ring tightening around her skull. The hands of the clock had passed ten, and the late-morning light jabbed deep into her eyeballs. A motorcycle tearing down the street out front filled the room with the groaning of a torture machine.

She was naked in her own bed, but she had absolutely no idea how she had managed to make it back. Most of the clothes she had been wearing the night before were scattered all over the floor. She must have torn them off her body. Her shoulder bag was on the desk. Stepping over the scattered clothes, she went to the kitchen and drank one glass of water after another from the tap. Going from there to the bathroom, she washed her face with cold water and looked at her naked body in the big mirror. Close inspection revealed no bruises. She breathed a sigh of relief. Still, her lower body retained a trace of that special feeling that was always there the morning after an intense night of sex-the sweet lassitude that comes from having your insides powerfully churned. She seemed to notice, too, an unfamiliar sensation between her buttocks. My god, Aomame thought, pressing her fingers against her temples. They did it there, too? Damn, I don't remember a thing.