The Unnamed Man was a guest at the Viginti after Mayu Arita and Harada were visiting.
Plot
The unnamed man was briefly shown to Mayu by Ginti, giving her the choice of sending him to the Void to bring back Harada. Mayu wasn't able to sent him to the void even though she didn't know him.
The fate of this unnamed man remains unknown, though it was likely suggested that he was also sent to the void.
Trivia
- This character might be a reference to Light Yagami, the protagonist of Death Note, as the series was also animated by Madhouse.