Durarara!! Episode 6 -

: Unlike previous episodes that focused on Mikado or Shizuo, this chapter features the "Otaku group" as they become embroiled in a kidnapping plot.

: The gang rescues a girl named Saki Mikajima from a group of kidnappers, showcasing their loyalty and the fact that they are much more than just a background group. Durarara!! Episode 6

If you're watching the series for the first time, this episode is widely considered a turning point because it proves that almost every "minor" character in Ikebukuro has a significant and potentially dangerous backstory. Durarara!! (TV Series 2010) - IMDb : Unlike previous episodes that focused on Mikado