"Asleep or Awake" is the fifth episode of Durarara!!x2 Ten and the forty-fifth episode overall of the Durarara!! anime.
Summertime has arrived. The Dollars’ internal purges continue. Anri is uncomfortable with Mikado’s behavior, while Masaomi worries about him from afar. Ruri, a popular idol singer, is being harassed by a stalker. The stalker is thought to be a member of the Dollars. Kasuka and Ruri turn to Shizuo, hoping to obtain some information. However…With all these different emotions in play, the city starts to come alive.
adapted from what manga or LN chapter?
references to previous episodes?
In order of appearance (not including OP)