Y'all, "girl crush" is a common concept name in kpop girl groups. It's a concept where the girls are sure of themselves and charismatics, it is supposed to be empowering for their female fans, so this probably won't be yuri ╮(─▽─)╭
I'm just gonna point out that the rain people(?) of the past having advanced technology was actually foreshadowed a long time ago when Livi and Nike went to the rain country and they had microphones and such. ╮(─▽─)╭