>>279906704
Yoru is a somewhat uncommon type of devil. Most Devils seem to go at it alone and don't associate much with other Devils.
Meanwhile, Yoru calls the people close to her "nakamas" and even refers to some Devils as her children.
Yoru is clearly meant to be a villain but she's probably still meant to have some qualities that aren't totally irredeemable, sort of like Conquest did.
I believe she does genuinely think of Denji and Asa as replacement for her old "comrades".