With her brain still clouded and her hand against the wall, she took a hot shower, scrubbing herself all over with soap and water in hopes of expunging the memory—or the nameless something close to a memory—of last night. She washed her genitals and anus with special care. She also washed her hair. Next she brushed her teeth to rid her mouth of its sticky taste, cringing all the while from the mint flavor of the toothpaste. Finally she picked up last night’s underthings and stockings from the bedroom floor and, averting her gaze, threw them in the laundry basket.

She examined the contents of the shoulder bag on the table. The wallet was right where it belonged, as were her credit and ATM cards. Most of her money was in there, too. The only cash she had spent last night, apparently, was for the return taxi fare, and the only things missing from the bag were some of her condoms—four, to be exact. Why four? The wallet contained a folded sheet of memo paper with a Tokyo telephone number. She had absolutely no memory of whose phone number it could be.

She stretched out in bed again and tried to remember what she could about last night. Ayumi went over to the men’s table, arranged everything in her charming way, the four had drinks and the mood was good. The rest unfolded in the usual manner. They took two rooms in a nearby business hotel. As planned, Aomame had sex with the thin-haired one, and Ayumi took the big, young one. The sex wasn’t bad. Aomame and her man took a bath together and then engaged in a long, deliberate session of oral sex. She made sure he wore a condom before penetration took place.

An hour later the phone rang, and Ayumi asked if it was all right for the two of them to come to the room so they could have another little drink together. Aomame agreed, and a few minutes later Ayumi and her man came in. They ordered a bottle of whiskey and some ice and drank that as a foursome.

What happened after that, Aomame could not clearly recall. She was drunk almost as soon as all four were together again, it seemed. The choice of drink might have done it; Aomame almost never drank whiskey. Or she might have let herself get careless, having a female companion nearby instead of being alone with a man. She vaguely remembered that they changed partners. I was in bed with the young one, and Ayumi did it with the thin-haired one on the sofa. I’m pretty sure that was it. And after that … everything after that is in a deep fog. I can’t remember a thing. Oh well, maybe it’s better that way. Let me just forget the whole thing. I had some wild sex, that’s all. I’ll probably never see those guys again.

But did the second guy wear a condom? That was the one thing that worried Aomame. I wouldn’t want to get pregnant or catch something from such a stupid mistake. It’s probably okay, though. I wouldn’t slip up on that, even if I was drunk out of my mind.

Hmm, did I have some work scheduled today? No work. It’s Saturday. No work on Saturday. Oh, wait. I do have one thing. At three o’clock I’m supposed to go to the Willow House and do muscle stretching with the dowager. She had to see the doctor for some kind of test yesterday. Tamaru called a few days ago to see if I could switch our appointment to today. I totally forgot. But I’ve got four and a half hours left until three o’clock. My headache should be gone by then, and my brain will be a lot clearer.

She made herself some hot coffee and forced a few cups into her stomach. Then she spent the rest of the morning in bed, with nothing but a bathrobe on, staring at the ceiling. That was the most she could get herself to do—stare at the ceiling. Not that the ceiling had anything of interest about it. But she couldn’t complain. Ceilings weren’t put on rooms to amuse people. The clock advanced to noon, but she still had no appetite. Motorcycle and car engines still echoed in her head. This was her first authentic hangover.

All of that sex did seem to have done her body a lot of good, though. Having a man hold her and gaze at her naked body and caress her and lick her and bite her and penetrate her and give her orgasms had helped release the tension of the spring wound up inside her. True, the hangover felt terrible, but that feeling of release more than made up for it.

But how long am I going to keep this up? Aomame wondered. How long can I keep it up? I’ll be thirty soon, and before long forty will come into view.

She decided not to think about this anymore. I’ll get to it later, when I have more time. Not that I’m faced with any deadlines at the moment. It’s just that, to think seriously about such matters, I’m—

At that point the phone rang. It seemed to roar in Aomame’s ears, like a super-express train in a tunnel. She staggered from the bed and lifted the receiver. The hands on the large wall clock were pointing to twelve thirty.

A husky female voice spoke her name. It was Ayumi.

“Yes, it’s me,” she answered.

“Are you okay? You sound like you’ve just been run over by a bus.”

“That’s maybe not far off.”

“Hangover?”

“Yeah, a bad one,” Aomame said. “How did you know my home phone?”

“You don’t remember? You wrote it down for me. Mine should be in your wallet. We were talking about getting together soon.”

“Oh, yeah? I don’t remember a thing.”

“I thought you might not. I was worried about you. That’s why I’m calling,” Ayumi said. “I wanted to make sure you got home okay. I did manage to get you into a cab at Roppongi Crossing and tell the driver your address, though.”

Aomame sighed. “I don’t remember, but I guess I made it here. I woke up in my own bed.”

“Well, that’s good.”

“What are you doing now?”

“I’m working, what I’m supposed to be doing,” Ayumi said. “I’ve been riding around in a mini patrol and writing parking tickets since ten o’clock. I’m taking a break right now.”

“Very impressive,” Aomame said. She meant it.

“I’m a little sleep deprived, of course. Last night was fun, though! Best time I ever had, thanks to you.”

Aomame pressed her fingertips against her temples. “To tell you the truth, I don’t remember much of the second half. After you guys came to our room, I mean.”

“What a waste!” Ayumi said in all seriousness. “It was amazing! The four of us did everything. You wouldn’t believe it. It was like a porno movie. You and I played lesbians. And then—”

Aomame rushed to cut her off. “Never mind all that. I just want to know if I was using condoms. That’s what worries me. I can’t remember.”

“Of course you were. I’m very strict about that. I made absolutely sure, so don’t worry. I mean, when I’m not writing tickets I go around to high schools in the ward, holding assemblies for the girls and teaching them, like, the right way to put on condoms. I give very detailed instructions.”

“The right way to put on condoms?” Aomame was shocked. “What is a policewoman doing teaching stuff like that to high school kids?”

“Well, the original idea was for me to give information to prevent sex crimes, like the danger of date rape or what to do about gropers on the subway, but I figure as long as I’m at it, I can add my own personal message about condoms. A certain amount of student sex is unavoidable, so I tell them to make sure they avoid pregnancy and venereal disease. I can’t say it quite that directly, of course, with their teachers in the room. Anyhow, it’s like professional instinct with me. No matter how much I’ve been drinking, I never forget. So you don’t have to worry. You’re clean. ‘No condom, no penetration.’ That’s my motto.”

“Thank you,” Aomame said. “That’s a huge relief.”

“Hey, want to hear about all the stuff we did?”

“Maybe later,” Aomame said, expelling the congealed air that had been sitting in her lungs. “I’ll let you tell me the juicy details some other time. If you did it now, my head would split in two.”