As the private detective delved into his investigation, I couldn't help but feel a sense of anticipation and anxiety. Yuki's past was shrouded in mystery, and the journey to uncover it was fraught with uncertainty.

The detective began by gathering information about Hiroshi Tanaka's whereabouts and background. He combed through records, conducted interviews, and meticulously pieced together the fragments of Yuki's family history.

At the same time, I began to have conversations with Yuki about her family, gently exploring her memories and feelings. It was a delicate balance between protecting her from disappointment and helping her understand her roots.