Yumi-chan

Yumi-chan is a hostess and the girlfriend of Yasunobu Endo, whose disappearance places her account among the few personal clues to his final hours. Initially identified as a schoolgirl who might be found at school, she is eventually located working in a bar. Her recollections establish the last contact she had with Endo, while leaving the purpose of his movements that night unresolved.

Identity and Introduction

When Jake Adelstein asks an older man in the Takada-gumi who might know about Endo or his disappearance, the man names Yumi-chan and suggests she might still be in high school. He also describes her as attractive. The lead is uncertain: the man cannot remember whether she is still a student. Sekiguchi later tracks her down, and the correction is decisive for the search. She is not in high school but working as a hostess.

The next evening, Jake Adelstein and Jun Yoshihara visit the bar. The mama-san seats them after Jun Yoshihara asks for Yumi-chan’s company. The club has purple velvet upholstery, sofas, a chandelier, and a karaoke machine; the subdued light makes the table candles seem unusually bright. Yumi is described as gorgeous, with a longish face and small, prominent lips. She sits beside Jun Yoshihara, while her colleague Kimiko sits next to Jake Adelstein. The setting introduces Yumi through the world in which Endo knew her: a hostess club where conversation and paid companionship form the ordinary frame for their relationship.

Relationship with Endo

Endo had been a regular at the club. Yumi remembers him as a gentleman who, despite being older, took her out, bought her lavish gifts, and had a strong animal magnetism. She slept with him out of curiosity and found him good in bed. Her account is affectionate but carefully bounded: she says she missed him after he disappeared, but had never been in love with him.

She also recalls a physical detail that complicates the polished image of the attentive older customer. Endo was covered in tattoos, and she found his skin cold. She compared the sensation of sleeping beside him to being with a snake, pleasant in summer but not in winter. The comparison is specific and intimate, but it does not turn her recollection into a declaration of devotion; her own distinction between missing him and loving him remains clear.

What She Knows About His Disappearance

Yumi’s most concrete contribution is the timing of their last contact. Sekiguchi traces Endo’s final night to a call at 9 p.m., after Endo had been gambling illegally. He told Yumi he would be a little late. She confirms that this was the last she heard from him. She does not know whom he intended to meet, and says that she rarely discussed work with him.

The call gives the investigation a point on the timeline, not an explanation. Yumi cannot identify Endo’s destination or the person he was going to see, and her account does not establish what happened after the call. Its value lies partly in that limit: she supplies a remembered detail from their private relationship without claiming knowledge she did not have.

Role in the Investigation

Sekiguchi’s discovery of Yumi leads Jake Adelstein and Jun Yoshihara to the club, where the investigators’ questions are embedded in a social visit over champagne. As the drinks flow, information follows: Yumi describes Endo’s habits as a customer, their intimacy, and the final call. The conversation makes her both a person mourning a vanished partner and a witness whose recollections can be checked against the case timeline.

Yumi’s role remains distinct from that of an investigator. She provides no solution to Endo’s disappearance and does not identify a suspect or motive. Instead, the narrative uses the contrast between public clues and private memory: a brief promise to arrive late, recalled by the woman who received the call, survives where the rest of Endo’s plans remain unknown. Her testimony narrows the chronology while preserving the uncertainty at the center of the case.