Golden Week

Golden Week is a holiday-period reference whose significance in the available evidence is contextual rather than tied to a dated scene. The investigation’s decisive discoveries concern identities and relationships that had to be reconstructed from scattered clues: Hiromi Kadokura’s public profile identified her birth name as Hiromi Asai, while Kyoichiro Kaga later reasoned that the missing Shunichi Watabe was likely Hiromi’s father, Tadao Asai. The evidence supplied here does not say that any of these events occurred during Golden Week.

The Holiday Period and the Investigation

The evidence catalog places Golden Week alongside an online search for Hiromi Kadokura, a note found in Kaga’s mother’s apartment, the scrutiny of a bridge-washing photograph, and later inquiries into the nuclear-power industry. These are clues from different strands of the investigation, not proof of a shared date. The distinction matters: Golden Week can be identified as the subject’s time-period reference, but the supplied material does not establish a particular year, day, or holiday-period action.

Clues Reconstructed Across Time

The online profile described Hiromi Kadokura as a director, playwright, and actress and gave her birth name as Hiromi Asai, linking her public identity to the name already relevant to the case. Separately, Kaga showed investigators a handwritten list of twelve bridge names, arranged by month, which matched the bridge names and months on Mutsuo Koshikawa’s calendar. He said his mother had maintained a long-term relationship with Shunichi Watabe and suspected Watabe had written the list, though he did not know what it meant. The note offered a concrete correspondence, but no explanation of its purpose.

A photograph from the Nihonbashi Bridge Washing ceremony supplied another limited clue. Asked whether anything unusual had happened in the year Hiromi Kadokura appeared in the picture, the photographer recalled her standing alone and said the ceremony had otherwise been normal. The image connected Hiromi to the ceremony, but did not itself explain her presence or establish a connection to Golden Week.

Records, Work, and Hidden Identity

The investigation’s search for Watabe was complicated by the structure of nuclear-plant contracting. Investigators were told that employment documents might no longer exist: companies were generally required to retain employee records for only three years, and that obligation applied to full-time workers rather than short-term laborers. Work passed through extensive contractor and subcontractor networks, where false names and forged residence cards were described as routine possibilities. The 2011 earthquake and tsunami had also led many smaller companies to leave the industry, further narrowing the trail.

A worker described a mobile life in which subcontractors placed laborers in temporary dormitories near each assignment; after a few months, workers moved on to another plant. He said he had worked that way for four years and showed Tadao a Radiation Dose Management Booklet bearing the name and photograph of Kazutoshi Yokoyama. He also described maintenance work as cleaning contaminated areas with a cloth and brush. These details explain how unstable work and identity could coexist with formal radiation records, while leaving open whether any particular name belonged to the person using it.

Retrospective Identification

Kaga’s eventual theory drew these fragments toward a family relationship. He reasoned that Hiromi Asai and Shunichi Watabe had been connected for at least ten years, that Watabe had little connection to others, and that Hiromi might have supported him financially. Given Watabe’s estimated age, disappearance, and knowledge of Michiko Oshitani, Kaga concluded that Watabe was likely Hiromi’s father, Tadao Asai. He further noted that Tadao’s supposed suicide was recorded only in the files of Biwa Gakuen Orphanage, without official records, and that Hiromi’s former classmates did not remember such a death. Kaga inferred that another person may have died in Tadao’s place and that Tadao had used that death to disappear. Golden Week remains a temporal label in the available evidence, not a confirmed setting for this revelation.