Somehow Shimoda stumbled into an underground kingdom.
This kingdom is a land for "animals that create the perfect society", with their queen at the top.
In this society, there are few physical differences, no aging, and the collective's happiness is prioritized over the individual's. It's too ideal a place, but there is a hidden truth about this system
so they don't go extinct 
even though they don't age.
فلا تنقرض رغم أنّها لا تتقدّم في العمر
sodass sie nicht aussterben,
obwohl sie nicht altern.
perciò non rischiano l'estinzione
 anche se non invecchiano.
então eles não entram em extinção,
mesmo não envelhecendo.
поэтому они не вымирают даже не старея.