She hurried into the bedroom, opened the dresser drawer, and took out the Heckler & Koch semiautomatic. She flicked off the safety, racked a round into the chamber, and reset it. She stuffed the pistol into the back of her jeans and went out to the balcony again. Bobblehead was still there, staring at the sky. His misshapen head was perfectly still. He seemed totally captivated by what he was seeing in the sky. Aomame knew how he felt. That was most definitely a captivating sight.

Aomame went back inside and put on a down jacket and a baseball cap. And a pair of nonprescription glasses with a simple black frame, enough to give her face a different appearance. She wound a gray muffler around her neck and put her wallet and apartment key in her pocket. She ran down the stairs and went out of the building. The soles of her sneakers were silent as she stepped out on the asphalt. It had been so long since she had felt hard, steady ground beneath her feet, and the feeling encouraged her.

As she walked down the road she checked that Bobblehead was still in the same place. The temperature had dropped significantly after the sun had set, but there was still no wind. She actually found the cold pleasant. Her breath white, Aomame walked as silently as she could past the entrance to the park. Bobblehead showed no sign that he had noticed her. His gaze was fixed straight up from the slide, on the sky. From where she was, Aomame couldn’t see them, but she knew that at the end of his gaze there were two moons—one large, one small. No doubt they were snuggled up close to each other in the freezing, cloudless sky.

She passed by the park, and when she got to the next corner, she turned and retraced her steps. She hid in the shadows and watched the man on the slide. The pistol against her back was as hard and cold as death, and the feeling soothed her.

She waited five minutes. Bobblehead slowly got to his feet, brushed off his coat, and gazed up one more time at the sky. Then, as if he had made up his mind, he clambered down the steps of the slide. He left the park and walked off in the direction of the station. Shadowing him wasn’t particularly hard. There were few people on a residential street on a Sunday night, and even keeping her distance, she wouldn’t lose him. He also had not the slightest suspicion that someone was observing him. He never looked back, kept walking at a set pace, the pace people keep when they’re preoccupied. How ironic, Aomame thought. The pursuer’s blind spot is that he never thinks he’s being pursued.

After a while it dawned on her that Bobblehead wasn’t heading toward Koenji Station. Back in the apartment, using a Tokyo map of all twenty-three wards, she had gone over the district again and again until she had memorized the local geography so she would know what direction to take in an emergency. So though he was initially headed toward the station, she knew that when he turned at one corner he was going in a different direction. Bobblehead didn’t know the neighborhood, she noticed. Twice he stopped at a corner, looked around as if unsure where to go, and checked the address plaques on telephone poles. He was definitely not from around here.

Finally Bobblehead picked up the pace. Aomame surmised that he was back on familiar territory. He walked past a municipal elementary school, down a narrow street, and went inside an old three-story apartment building.

Aomame waited for five minutes after the man had disappeared inside. Bumping into him at the entrance was the last thing she wanted. There were concrete eaves at the entrance, a round light bathing the front door in a yellowish glow. She looked everywhere but couldn’t find a sign for the name of the building. Maybe the apartment building didn’t have a name. Either way, it had been built quite a few years ago. She memorized the address indicated on the nearby telephone pole.

After five minutes she headed toward the entrance. She passed quickly under the yellowish light and hurriedly opened the door. There was no one in the tiny entrance hall. It was an empty space, devoid of warmth. A fluorescent light on its last legs buzzed above her. The sound of a TV filtered in from somewhere, as did the shrill voice of a child pestering his mother.

Aomame took her apartment key out of the pocket of her down jacket and lightly jiggled it in her hands so if anyone saw her it would look like she lived in the building. She scanned the names on the mailboxes. One of them might be Bobblehead’s. She wasn’t hopeful but thought it worth trying. It was a small building, with not that many residents. When she ran across the name Kawana on one of the boxes, all sound faded away.

She stood frozen in front of that mailbox. The air felt terribly thin, and she found it hard to breathe. Her lips, slightly parted, were trembling. Time passed. She knew how stupid and dangerous this was. Bobblehead could show up any minute. Still, she couldn’t tear herself away from the mailbox. One little card with the name Kawana had paralyzed her brain, frozen her body in place.

She had no positive proof that this resident named Kawana was Tengo Kawana. Kawana wasn’t that common a name, but certainly not as unusual as Aomame. But if, as she surmised, Bobblehead had some connection with Tengo, then there was a strong possibility that this Kawana was none other than Tengo Kawana. The room number was 303, coincidentally the same number as the apartment where she was currently staying.

What should I do? Aomame bit down hard on her lip. Her mind kept going in circles and couldn’t find an exit. What should I do? Well, she couldn’t stay planted in front of the mailbox forever. She made up her mind and walked up the uninviting concrete stairs to the third floor. Here and there on the gloomy floor were thin cracks from years of wear and tear. Her sneakers made a grating noise as she walked.

Aomame now stood outside apartment 303. An ordinary steel door with a printed card saying Kawana in the name slot. Just the last name. Those two characters looked brusque, inorganic. At the same time, a deep riddle lay within them. Aomame stood there, listening carefully, her senses razor sharp. But she couldn’t hear any sound at all from behind the door, or even tell if there was a light on inside. There was a doorbell next to the door.

Aomame was confused. She bit her lip and contemplated her next step. Am I supposed to ring the bell? she asked herself.

Or was this some clever trap? Maybe Bobblehead was hiding behind the door, like an evil dwarf in a dark forest, an ominous smile on his face as he waited. He deliberately revealed himself on top of that slide to lure me over here and take me captive. Fully aware that I’m searching for Tengo, he’s using that as bait. A low-down, cunning man who knows exactly what my weak point is. That’s the only way he could ever get me to open my door from the inside.

She checked that no one else was around and pulled the pistol out of her jeans. She flicked off the safety and stuffed the pistol into the pocket of her down jacket so she could get to it easily. She gripped the pistol in her right hand, finger on the trigger, and with her left hand pressed the doorbell.

The doorbell rang inside the apartment. A leisurely chime, out of step with her racing heart. She gripped the pistol tight, waiting for the door to open. But it didn’t. And there didn’t seem to be anyone peering out at her through the peephole. She waited a moment, then rang the bell again. The bell was loud enough to get all the people in Suginami Ward to raise their heads and prick up their ears. Aomame’s right hand on the pistol grip started to sweat a little. But there was no response.

Better leave, she decided. The Kawana who lives in 303, whoever he is, isn’t at home. And that ominous Bobblehead is still lurking somewhere in this building. Too dangerous to stay any longer. She rushed down the stairs, shooting a glance at the mailbox as she passed, and left the building. Head down, she hurried under the yellow light and headed toward the street. She glanced back to make sure no one was following her.