This arc is the best, if only for all the chances Iruma has to call Amelie cute
@ChronaBECAUSE (but yeah, I had the same question when I found out male evildols (idols) are a thing here. I’m guessing the author just really wanted to draw them crossdressing (plus it makes for more comedic situations).
@TNT261 I'd assume is just that Kerori's group is supposed to be just girls or that groups have to be same sex. But as males have differently shaped tail everyone knows Lied ain't a girl but nobody gives a shit and acts as he is one lmao