 The D-Reaper then turned the Shinjiku Metropolitan building into its base of operations while converting the surrounding area into the D-Reaper Zone.Other then its Jeri-Type Agent, the D-Reaper creates more ADRs as drone units that function as extensions of the D-Reaper's conscious to study human behavior while expanding its territory.Unlike the Jeri-Type, the succeeding ADRs operate outside the D-Reaper Zone by a red life line, similar in function to umbilical cords.