"A Cat Has Nine Lives" is the seventh episode of Durarara!!x2 Ten and the forty-seventh episode overall of the Durarara!! anime.
The stalker is targeting everyone who has had anything to do with Ruri.
Masaomi, who’s with Shizuo, also gets dragged into all the turmoil, and runs into the Blue Squares. Learning that Anri is in danger and that Mikado is somehow involved, Masaomi sets off to discover the truth, and learns that Mikado is now the leader of the Blue Squares.
And now the information broker, having returned to Ikebukuro, is about to launch a new scheme.
adapted from what manga or LN chapter?
references to previous episodes?
In order of appearance (not including OP)