Kadokawa has revealed the second promotional video, an additional cast member, and the January 4th premiere date for the fourth season of Bungo Stray Dogs .
The video also features the anime's opening theme song, "True Story," by the band SCREEN MODE. Luck Life will perform the ending theme song, "Shirushi/°C.".
Newly announced cast member Shoya Chiba will play Sigma, a member of Decay of the Angel and general manager of Sky Casino.

Synopsis
A wave of mysterious suicides is sweeping the world, and all the victims have something in common: they possess special powers. Atsushi Nakajima and Osamu Dazai, members of the Armed Detective Agency, are called upon by Ango Sakaguchi to investigate the situation. The prime suspect is Tatsuhiko Shibusawa, an enigmatic man who calls himself the Collector.
The returning core staff includes director Takuya Igarashi, script supervisor and writer Yoji Enokido, character designer and chief animation director Nobuhiro Arai, and animation studio BONES . Key cast members Yuto Uemura (Atsushi Nakajima), Mamoru Miyano (Osamu Dazai), Sumire Morohoshi (Kyoka Izumi), Kensho Ono (Ryunosuke Akutagawa), and Kisho Taniyama (Chūya Nakahara) are also returning.
Source: ANN

