Tengo had no idea, of course, what Aomame had offered to the moon that time, but he could well imagine what the moon had given her: pure solitude and tranquillity. That was the best thing the moon could give a person.

Tengo paid his bill and walked out of the Barleyhead. Then he looked up at the sky but could not find the moon. The sky was clear, and the moon should be up, but it could not be seen from street level with buildings all around. Hands thrust in his pockets, Tengo walked from one street to the next, looking for the moon. He wanted to go someplace with an open field of vision, but finding such a place in a neighborhood like Koenji was no easy matter. The area was so flat that finding even a slight incline involved a major effort, and there were no hills at all. The best place might be the roof of a tall building with a view in all directions, but he couldn’t see the kind of building in the area that let people up to the roof.

As he went on walking around aimlessly, Tengo recalled that there was a playground nearby, one that he often passed on walks. It was not a large playground, but it probably had a slide. If he climbed that, he should be able to have a better view of the sky. It wasn’t a tall slide, but the view should be better than from street level. He headed for the playground. His watch hands were pointing to nearly eight o’clock.

There was no one in the playground. A tall mercury-vapor lamp stood in the middle, illuminating every corner of the place. There was a large zelkova tree, its leaves still thick and luxuriant. There were several low shrubs, a water fountain, a bench, swings, and a slide. There was also a public toilet, but it had been locked by a worker at sunset, perhaps to keep vagrants out. During the daytime, young mothers brought their children who were not yet old enough for kindergarten, and kept up their lively chattering while the children played. Tengo had observed such scenes any number of times. Once the sun went down, however, almost no one visited this place.

Tengo climbed the slide and, still standing, looked up at the night sky. A new six-story condo stood on the north side of the park. He had never noticed it before. It must have been built quite recently. It blocked the northern sky like a wall. Only low buildings stood on the other three sides of the playground. Tengo turned to scan the area and found the moon in the southwest, hanging over an old two-story house. It was about three-quarters full. Just like the moon of twenty years ago, Tengo thought. Exactly the same size and shape. A complete coincidence. Probably.

But this bright moon, hanging in the early-autumn night sky, had sharp, clear outlines and the introspective warmth characteristic of this season. The impression it gave was very different from that of the moon at three thirty in the December afternoon sky. Its calm, natural glow had the power to soothe and heal the heart like the flow of clear water or the gentle stirring of tree leaves.

Standing on the very top of the slide, Tengo looked up at that moon for a very long time. From the direction of Ring Road 7 came the blended sound of different-sized tires, like the roar of the sea. All at once the sound reminded Tengo of the sanatorium where his father was staying on the Chiba shore.

The city’s earthly lights blotted out the stars as always. The sky was nice and clear, but only a few stars were visible, the very bright ones that twinkled as pale points here and there. Still, the moon stood out clearly against the sky. It hung up there faithfully, without a word of complaint concerning the city lights or the noise or the air pollution. If he focused hard on the moon, he could make out the strange shadows formed by its gigantic craters and valleys. Tengo’s mind emptied as he stared at the light of the moon. Inside him, memories that had been handed down from antiquity began to stir. Before human beings possessed fire or tools or language, the moon had been their ally. It would calm people’s fears now and then by illuminating the dark world like a heavenly lantern. Its waxing and waning gave people an understanding of the concept of time. Even now, when darkness had been banished from most parts of the world, there remained a sense of human gratitude toward the moon and its unconditional compassion. It was imprinted upon human genes like a warm collective memory.

Come to think of it, I haven’t looked hard at the moon like this for a very long while, Tengo thought. When could the last time have been? Living one hectic day after another in the city, you tend to look down at the ground. You forget to even look at the night sky.

It was then that Tengo realized there was another moon hanging in the sky. At first, he thought it might be an optical illusion, a mere trick of light rays, but the more he looked at it, the surer he became that there was a second moon with solid outlines up there. His mind went blank as he stared in its direction, open-mouthed. What am I seeing? He could not make up his mind. The outline and the substance refused to overlap, as when word and concept fail to cohere.

Another moon?

He closed his eyes, opened his palms, and rubbed his cheeks. What’s wrong with me? I didn’t drink that much. He drew in a long, quiet breath and then quietly expelled it. He checked to be sure his mind was clear. Who am I? Where am I now? What am I doing? he asked himself in the darkness behind his closed eyelids. It’s September 1984, I’m Tengo Kawana, I’m in a playground in Koenji in Suginami Ward, and I’m looking up at the moon in the night sky. No doubt about it.

Then he slowly opened his eyes and looked at the sky again, carefully, his mind calm, but still there were two moons.

This is no illusion. There are two moons. Tengo balled his hand into a fist and kept it that way for a long time.

The moon was as taciturn as ever. But it was no longer alone.

CHAPTER 19

Aomame

WHEN THEDOHTAWAKES UP

Air Chrysalis was a fantastical story, but it took the form of a very readable novella narrated from beginning to end in a simple, colloquial style, by a ten-year-old girl. It was not overly complex in terms of its vocabulary or logic, and it did not contain long-winded explanations or wordy expressions. The words and style of the young narrator were universally appealing—concise and, in most cases, pleasant—but they explained almost nothing about the events that unfolded. Rather, the girl simply let the narrative flow as she recounted what she had seen with her own eyes, never stopping to consider “What is going on here?” or “What could this mean?” The book moved forward at an easy pace appropriate to the story she was telling. Her readers followed along, very naturally adopting her point of view, and before they knew it, they were in another world—a world that was not this world, a world in which the Little People made air chrysalises.

Reading the first ten pages, Aomame felt herself responding strongly to the novel’s style. If indeed this was Tengo’s creation, he was certainly a talented writer. The Tengo that Aomame knew was primarily a mathematical genius. He was said to be a prodigy, easily able to solve mathematical problems that were too difficult for most adults. His grades had been outstanding in other subjects, too, if not quite up to his work in mathematics. He was also physically big and an all-around athlete, but Aomame did not recall anything about his being an especially good writer. Probably that talent was obscured at the time in the shadow of his mathematics.