Hirata saw, to his chagrin, that Rakuami was more concerned about pleasing an envoy from the powerful Lord Matsudaira than a retainer to the shogun’s detective. “Is there someplace quiet we can talk?” Hirata said, asserting his own authority.

“How about a drink?” Rakuami asked Otani.

“No, thank you,” Hirata said loudly.

“That would be most appreciated,” said Otani.

“Right this way.”

Rakuami ushered Otani to a corner of the parlor. Otani’s men followed, as did those sent by the chamberlain. Rakuami seated everyone and beckoned the maids, who poured the men cups of sake. The festivities continued noisily around them. The detectives looked at Hirata.

“Come on,” he told them. Resentment simmered inside him as he squeezed in beside Rakuami and the detectives sat at the edge of the group.

“Was a girl named Okitsu ever one of your courtesans?” Otani was saying to Rakuami.

“Yes,” Rakuami said. Eager to please Otani, he added, “I bought her from a broker who was selling farm girls.”

Brokers traveled the country, buying daughters from impoverished peasant families to sell to pleasure houses in the city. The prettiest girls went to Yoshiwara for high prices. The others ended up in places such as Rakuami’s, or worse.

“Okitsu was a sweet little thing.” Rakuami’s lewd smile suggested that he’d partaken of her favors himself. “I hope she’s not in any trouble?”

“She’s a suspect in the crime,” Hirata said.

“You don’t say!” Rakuami glanced at Hirata, then turned back to Otani. “I can’t believe little Okitsu had anything to do with the murder.”

“She never caused problems here?” Otani said.

“None at all,” Rakuami said. “She was pleasant-natured and obedient. Everybody liked her. She was very popular with my guests.”

“That should be enough to settle whatever doubts you have about her character and clear her of suspicion,” Otani said, condescending to address Hirata.

“But of course Rakuami would speak well of her,” Hirata said angrily. “He wouldn’t want to get a reputation for employing troublesome girls.”

Otani and Rakuami exchanged a glance that deplored Hirata’s temper. Rakuami said, “Hirata-san, you take life too seriously. You need to relax.” He called to a saucy girl in a bright pink kimono: “Come entertain my young friend.”

The girl knelt behind Hirata and began massaging his shoulders. “Go away,” Hirata ordered. “Leave me alone!”

The other men chuckled at his discomfiture. Even the detectives hid smiles as the girl continued her attentions and giggled. That Rakuami was making a fool of him in front of everyone increased Hirata’s anger. His onetime friend was paying him back for that long-ago raid. Hirata put the girl firmly aside. He said to Rakuami, “Did Senior Elder Makino meet Okitsu here?”

“Yes. Makino was a regular guest here. And Okitsu was one of his favorite girls.”

Although Rakuami still twinkled with mirth at Hirata’s expense, a cautious note in his voice suggested that he would rather not discuss the relations between Makino and Okitsu. Scenting a clue, Hirata said, “Was Makino one of Okitsu’s favorite clients?”

“Yes, indeed,” Rakuami said.

Hirata looked askance at him. "Okitsu was a pretty young girl. Makino was a mean, ugly old man. But she liked him anyway?”

“Very much.” Rakuami was no longer smiling; his manner turned defensive. Otani frowned.

“He paid for her favors, so she was forced to serve him, but she enjoyed it because she liked him,” Hirata said with disdainful skepticism.

“All right, she wasn’t fond of him. But that didn’t matter. She behaved very nicely toward him.” Rakuami’s face now glistened with sweat as well as grease. “All my girls do toward their clients.”

“Can your girls and your servants confirm what you’ve told me?” Hirata said. “Go ask them,” he ordered the detectives.

“Wait.” Rakuami raised his hand, loath to disrupt the party. Hirata motioned the detectives to stay. Rakuami said reluctantly, “The first time Makino asked for Okitsu’s company, she begged me not to make her serve him. She said he frightened her. The very sight of him made her sick. She said she hated him. But I told her she’d better make him happy because he was an important client.”

“And she made him so happy that he wanted her all to himself,” Hirata deduced, glad that he’d finally gotten the upper hand. “Did he buy her from you?” When Rakuami nodded, Hirata said, “How did Okitsu like the idea of being concubine to a man who frightened and revolted her?”

Rakuami’s gaze roved the room, avoiding Hirata. “It was an advantageous opportunity for Okitsu. When my girls get too old to attract clients, I have to let them go. I can’t afford to keep them if they’re not earning money. A lot of them end up begging on the streets.” He spoke with casual indifference to their fate. “For Okitsu to latch onto a rich, powerful man like Makino would secure her future.”

“But she didn’t want to live with him,” Hirata said, perceiving the truth that Rakuami wanted to deny.

“She’s young and foolish,” Rakuami scoffed. “She didn’t know what was best for her. I told her that Makino would give her a good home. She would have to serve only one man instead of many.”

“What happened when Okitsu found out you were selling her to Makino?”

Rakuami hesitated, licking his moist lips.

“I’m sure there’s someone else here who will tell me.” Hirata started to rise; the detectives followed suit.

Rakuami grimaced in annoyed resignation. “Okitsu tried to commit suicide,” he said in a flat, low voice that his guests wouldn’t hear.

“How?” Hirata said as he and the detectives resettled themselves.

“She jumped into the canal behind the house and tried to drown herself,” Rakuami said. “But some boatmen rescued her. I sent her to Makino’s house the next day.”

Otani broke into the conversation: “This is irrelevant. The girl tried to hurt herself, not Makino. We’ve heard nothing to suggest that she murdered him.”

“Maybe Makino treated her badly while they lived together,” Hirata said. “Maybe Okitsu was desperate to be rid of him, and she decided she would rather kill Makino than herself.”

“Maybe you’re making up stories that you want to believe,” Otani mocked Hirata. Then he said to Rakuami, “Thank you for your assistance. We won’t trouble you any longer.”

He and his men stood, as did Chamberlain Yanagisawa’s watchdogs. Rakuami jumped to his feet, bowed, and smiled, relieved to end Hirata’s interrogation. “To serve you is my pleasure,” he told Otani. “Perhaps you’ll do me the honor of visiting me again some other time?” His expansive gesture offered Otani his girls, food, drink, and music.

“I will,” Otani said.

Hirata and his detectives also rose, but Hirata said, “We’re not leaving yet. First, we’ll see what everyone else here has to say about Okitsu.”

He began separating girls and servants from the clients, who hastily absconded rather than get involved. Rakuami watched in helpless outrage. Hirata took a malicious, shameful pleasure in causing Rakuami trouble while forcing Otani and the other watchdogs to observe a tedious round of interviews. And although the interviews produced nothing more than Rakuami had told him, Hirata felt relieved that despite Otani’s hindrance, he’d discovered that Okitsu had a motive for the murder. He would have something to report to Sano.

At last, he and his party left the house. When they went outside to reclaim their horses, Otani drew Hirata aside and spoke in a confidential tone: “There’s something I must tell you, for your own good.”

Hirata eyed him warily.

“The sōsakan-sama is making a big mistake by conducting the investigation in this way,” Otani said. “If you follow his lead, you’ll go down with him. Do yourself a favor. Cooperate with me. Protect your own future.”

“Are you saying I should defy my master’s wish for the truth about the murder and conspire with you to incriminate the chamberlain so that Lord Matsudaira will reward me?” Hirata stared in disbelief at Otani’s puffy face.