A Feast in Time of Plague is a virus-type ability that is usually infected and activated to two target hosts. The virus is transmitted through open wounds, which causes the infected individuals with high fever and dizziness. In 48 hours, their bodies' microfauna grow and simultaneously eat away their internal organs. If either host dies within the given time, the virus ability will cease to activate. Hence, the most common method to deactivate the virus on one host is to kill the other host within 48 hours. Fyodor Dostoevsky also once hinted to Osamu Dazai that it can be considered suicidal to nullify the virus ability, implying that it either cannot be deactivated through such means or it might also affect Dazai in the process. Since the virus is transmitted through open wounds, Pushkin usually operated in the organization, especially during the events of Cannibalism, with the help of offensive-type ability users, such as Nathaniel Hawthorne and Ivan Goncharov to inflict wounds on their targets.
The ability is based on A Feast in Time of Plague (Пир во время чумы, Pir vo vremya chumy), an 1830 play by the real-life Alexander Pushkin about a banquet being held in the midst of a plague ravaging their city.