The Preparatory Committee also discovered that the pair and four others also went out for drinks on the night of December 31, the second day of Comiket.
The Preparatory Committee reaffirmed that it had explicitly asked both attendees and staff members to refrain from social gatherings during the period that the event was on.
Health authorities and the Preparatory Committee concluded that the spreader event happened on the night of December 31, after the event had occurred.