Durarara!!x2 Shou Episode 04

"When in Rome, Do as the Romans Do" is the fourth episode of Durarara!!x2 Shou and the thirtieth episode overall of the Durarara!! anime.

Synopsis
Thugs and prospective bounty hunters vie for Max Sandshelt's 10 million yen prize on Celty Sturluson, chasing her around the freeways of Ikebukuro as she carries a mysterious package for an anonymous client. After saving Mairu and Kururi Orihara from the Toramaru, Kyouhei Kadota saves Mikado Ryuugamine, Anri Sonohara, and Aoba Kuronuma from the remnants of the Yellow Scarves, leading the Toramaru on a chase around the city as well. Teaming up and giving up on the chase, choosing to face the pursuers head-on long enough for her friends to get away, Celty is aided by Egor and the serial killer Hollywood in taking out their enemies. An unlucky mistake by the remnants of the Toramaru motorcycle group put the rest of them in the hospital courtesy of Shizuo Heiwajima. When the fighting is over and the bounty on Celty rescinded, she is able to resume her happy, peaceful life, inviting all of her friends over to her and Shinra Kishitani's apartment for hotpot.

Mika Harima is happy to begin giving cooking lessons to Celty, Anri, and Erika Karisawa. Mairu and Kururi are disappointed that they still have not met the Black Rider, and Izaya Orihara, bitter at the events going on in the city and that have left him out, plans his next move.

Character Debuts

 * Shu Aozaki
 * Mizuki Akabayashi
 * Takaaki Kazamoto

Character Appearances
In order of appearance, excluding the opening song:

Cultural References

 * Erika has posters for the series Samurai Flamenco, Persona 3 The Movie #2: Midsummer Knight's Dream, and Sword Art Online II, although the second season of SAO aired in 2014, following Durarara!!'s anime timeline rather than its original timeline, which puts the events of this episode in 2011.
 * Mairu and Kururi take Egor shopping along Sunshine 60 Street in Ikebukuro, walking past a Uniqlo that is stylized as "Uniqma."

Trivia

 * When the van gang picks up Mikado, Anri, and Aoba, they pull up alongside the Tokyu Hands building and drive down the last block of Sunshine 60 Street before turning onto the main road. This shopping street is for pedestrians only; cars are not able to access it.