Bungo Stray Dogs (Manga) Vol 12

With the heads of the Detective Agency and the Port Mafia hospitalized due to a deadly virus, a one-on-one battle between Akutagawa and Kyouka, and Chuuya and Ranpo threatens to wreak havoc on the city of Yokohama! Meanwhile, Kunikida and Atsushi are in desperate search for a cure, but will they make it in time or be forced to fight their old nemesis once more?! Ages 16 And Up, Grades 11 to 17 Yen Press
(W) Kafka Asagiri (A/Ca) Sango Harukawa