Edo, Genroku Period, Year 7, Month 5 (Tokyo, June 1694)

The great metropolis of Edo sweltered in summer. An aquamarine sky reflected in canals swollen from rains that deluged the city almost daily. The multicolored sails of pleasure craft billowed amid the ferries and barges on the Sumida River: Along the boulevards, and in temple gardens, children flew kites shaped like birds. In the Nihonbashi merchant district, the open windows, doors, and skylights of houses and shops welcomed elusive breezes; perspiring townspeople thronged marketplaces bountiful with produce. A miasma of fever rose from alleys that reeked of sewage; pungent incense smoke combated buzzing mosquitoes. Roads leading out of town were crowded with religious pilgrims marching toward distant shrines and rich folk bound for summer villas in the cooler climate of the hills. The sun blazed down upon the peaked tile roofs of Edo Castle, but trees shaded the private quarters of Lady Keisho-in, mother of the shogun Tokugawa Tsunayoshi, Japan ’s supreme military dictator. There, on a veranda, three ladies gathered.

“I wonder why Lady Keisho-in summoned us,” said Reiko, wife of the shogun’s sōsakan-sama-Most Honorable Investigator of Events, Situations, and People. She looked over the railing and watched her little son, Masahiro, play in the garden. He ran laughing over grasses verdant from the rains, around a pond covered by green scum, past flowerbeds and shrubs lush with blossoms.

“Whatever she wants, I hope it doesn’t take long,” said Midori. She was a former lady-in-waiting to Keisho-in and a close friend of Reiko. Six months ago Midori had married Sano’s chief retainer. Now she clasped her hands across a belly so rotund with pregnancy that Reiko suspected Midori and Hirata had conceived the child long before their wedding. “This heat is too much for me. I can’t wait to go home and lie down.”

Midori’s young, pretty face was bloated; her swollen legs and feetl could hardly bear her weight. She tugged at the cloth bound tight around her stomach beneath her mauve kimono to keep the child small and ensure an easy delivery. “This thing didn’t work. I’ve grown so huge, my baby must be a giant,” she lamented. She waddled into a shady corner of the veranda and sat awkwardly.

Reiko pushed away strands of hair that had escaped her upswept coiffure and clung to her damp forehead. Perspiring in her sea-blue silk kimono, she wished she, too, could go home. She shared her husband Sano’s work, aiding him with his inquiries into crimes, and at any moment there might arise a new case, which she wouldn’t want to miss. But Lady Keisho-in had commanded Reiko’s presence. She couldn’t refuse the mother of her husband’s lord, though her eagerness to leave stemmed from a reason more serious than a desire for exciting detective work.

The wife of Chamberlain Yanagisawa-the shogun’s powerful second-in-command-stood apart from Reiko and Midori. Lady Yanagisawa was quiet, dour, some ten years older than Reiko’s own age of twenty-four, and always dressed in dark, somber colors as if to avoid drawing attention to her total lack of beauty. She had a long, flat face with narrow eyes, wide nose, and broad lips, and a flat, bow-legged figure. Now she sidled over to Reiko.

“I am so thankful I was invited here and given the chance to see you,” Lady Yanagisawa said in her soft, gruff voice.

Her gaze flitted over Reiko with yearning intensity. Reiko stifled the shudder of revulsion that Lady Yanagisawa always provoked. The woman was a shy recluse who seldom ventured into society, and she’d had no friends until last winter, when she and Reiko had met. Lady Yanagisawa had attached herself to Reiko with an eagerness that attested to her lonely life and craving for companionship. Since then, Lady Yanagisawa had visited Reiko, or invited her to call, almost daily; when their family responsibilities or Reiko’s work for Sano precluded meetings, Lady Yanagisawa sent letters. Her devotion alarmed Reiko, as did her unwelcome confidences.

“Yesterday I watched my husband writing in his office,” Lady Yanagisawa said. She’d told Reiko about how she spied on the chamberlain. “His calligraphy is so elegant. His face looked so beautiful as he bent over the page.”

Ardor flushed her pale cheeks. “When he passed me in the corridor, his sleeve brushed mine… ” Lady Yanagisawa caressed her arm, as though savoring the contact. “He looked at me for an instant. His gaze lit a fire in me… my heart beat fast. Then he walked on and left me alone.” She exhaled with regret.

Embarrassment filled Reiko. She’d once been curious about her friend’s marriage, but now she’d learned more than she liked. She knew that Chamberlain Yanagisawa, who had risen to power via an ongoing sexual affair with the shogun, preferred men to women and cared nothing for his wife. Lady Yanagisawa passionately loved him, and though he ignored her, she never gave up hope that someday he would return her love.

“Last night I watched my husband in his bedchamber with Police Commissioner Hoshina,” Lady Yanagisawa said. Hoshina, current paramour of the chamberlain, lived, at his estate. “His body is so strong and masculine and beautiful.” Her blush deepened; desire hushed her tone. “How I wish he would make love to me.”

Reiko inwardly squirmed but couldn’t evade Lady Yanagisawa’s confessions. The chamberlain and Sano had a history of strife, and although they’d enjoyed a truce for almost three years, any offense against the chamberlain or his kin might provoke Yanagisawa to resume his attacks on Sano. Hence, Reiko must endure the friendship of Lady Yanagisawa, despite strong reason to end it.

Lady Yanagisawa suddenly called, “No, no, Kikuko-chan.”

In the garden Reiko saw her friend’s nine-year-old daughter, Kikuko, pulling up lilies and throwing them at Masahiro. Beautiful but feebleminded, Kikuko was the other object of her mother’s devotion. A chill passed through Reiko as she watched the children gather the broken flowers. She knew how much Lady Yanagisawa envied her beauty, loving husband, and bright, normal child, and wished her misfortune even while courting her affection. Last winter Lady Yanagisawa had arranged an “accident” that had involved Kikuko and almost killed Masahiro. Ever since, Reiko had never left him alone with Lady Yanagisawa or Kikuko, and she employed Sano’s detectives to guard him when she was away from home. She always wore a dagger under her sleeve during visits with Lady Yanagisawa; she never ate or drank then, lest her friend try to poison her. Extra guards protected her when she slept or went out. Such vigilance was exhausting, but Reiko dared not withdraw from the woman, lest she provoke violent retaliation. Would that she could keep away from Lady Yanagisawa!

The door to the mansion opened, and out bustled Lady Keisho-in, a small, pudgy woman in her sixties, with hair dyed black, a round, wrinkled face, and teeth missing. She wore a short blue cotton dressing gown that exposed blue-veined legs. Maids followed, waving large paper fans at her to create a cooling breeze.

“Here you all are! Wonderful!” Keisho-in beamed at Reiko, Midori, and Lady Yanagisawa. They murmured polite greetings and bowed. “I’ve invited you here to tell you the marvelous idea I just had.” She dimpled with gleeful excitement. “I am going to travel to Fuji-san.” Her sweeping gesture indicated the peak of Mount Fuji. Revered as a home of the Shinto gods and a gateway to the Buddhist spirit world, the famous natural shrine hovered, snowcapped and ethereal, in the sky far beyond the city. “And you shall all come with me!”

Stunned silence greeted this announcement. Reiko saw her dismay expressed on the faces of Midori and Lady Yanagisawa. Keisho-in regarded them all with a suspicious frown. “Your enthusiasm overwhelms me.” Displeasure harshened her crusty voice. “Don’t you want to go?”