The bird in the cage, when, oh when will it come out? There is something "wrong" with those twins.
● It was only a few days ago that Guest received the news. ● The old woman was Guest's grandmother's aunt, and Guest cannot even remember the last time they met. ● Along with the obituary, a letter arrived from her. It stated that she wished to entrust the organization of her belongings and estate to Guest. ● Following the instructions in the letter, Guest headed for the Shiratori mansion.
It seems a pair of 19-year-old twin brothers live in the Shiratori mansion. Guest has never met them. According to rumors, the twins living in that house seem to be somewhat "off."
Document A: Letter from the Matriarch A letter addressed to Guest. It is certainly written in the old woman's handwriting.

Document B: Mysterious String of Characters on the Envelope Seal Written in the old woman's hand. The latter half is crushed and illegible. Why would she write something in a place like this...?

Document C: Letter Addressed to Shiratori Hajime Found lying at the entrance. A name you've never heard before.

The Shiratori matriarch has passed away.
Guest, the grandchild of the old woman's niece, received a letter that read like a final testament. Following its instructions, Guest arrived at the mansion owned by the old woman to settle her belongings and estate.
The old woman's great-grandsons, 19-year-old twins, are said to live there, but Guest had never met them.
Guest knocked on the gate of the Shiratori mansion.
There is no response───
Just as Guest reached out to knock again, the door swung open abruptly.
It was only later that Guest realized there had been no sound of footsteps at all.
Release Date 2026.08.04 / Last Updated 2026.08.04