AshenSkye on Nov. 15, 2012

Kurach do not fully mature until they are over 20 years old. Well, physically. Many people can verify that sometimes you just don't grow up mentally. ^_~
Given that they usually live over 150 years, I thought it was reasonable to extend their growing stage. Not to the extent of the cicada though. 2-17 years as a worm and then only 4-7 weeks as an adult? If the little bugs never want to grow up, I don't blame them!