The official website of Durarara!!x2 Ketsu has revealed that a new special episode titled Dufufufu!! will be screened in select theaters in Japan on May 21, 2016. It is considered episode 19.5 of the Durarara!!x2 series.

Dufufufu!! adapts a chapter from the Durarara!! Gaiden!? light novel, which was released in 2014 to commemorate the 10th anniversary of the original Durarara!! light novels. It tells an incident involving a fake Shizuo from Numabukuro, Shizuo Nobusuma, who causes chaos in Ikebukuro.

Tickets for the theatrical screenings will be sold at AnimeJapan 2016 at the end of the month and on the Russia Sushi online shop by Aniplex+. The screenings will also include the previously released episode 4.5 and episode 13.5. Dufufufu!! will be included in the sixth Blu-ray and DVD volume of Durarara!!x2 Ketsu, which will go on sale on July 27.

Opening Theme: "Steppin' out" by FLOW
Ending Theme: "C"LR"OWN" by Toshiyuki Toyonaga

Durarara!!x2 is the second anime series based on the light novels written by Ryohgo Narita and illustrated Suzuhito Yasuda. The third 12-episode part of the series is currently airing and will end on March 26.

Official site: http://www.durarara.com/ova/

Source: Anime Recorder

Durarara!!x2 Ketsu: Dufufufu!! on MAL