The ending titled "Boku wa dare da?" (Who am I?) will continue from the drama's last episode shown on TV where Rei (Fukushi) is found to be suffering from dissociative identity disorder and has two characters within him i.e. Rei and Saku. The new story will describe the conversations he has with his inner self after he turns himself in for the murder of his father and the outcome of his relationship with his girlfriend Sawa (Kawaguchi Haruna).
Fukushi commented that the new ending offered a very different challenge for him as he had to speak 30 pages of lines all on his own during the conversation between Rei and Saku. However, it was worthwhile doing it especially as Rei and Saku finally come face to face with each other. As such, he hoped that everyone will be able to watch this new story to see how the drama finally ends.