Thread:Mai Is Me/@comment-35377361-20180422173428/@comment-35377361-20180422192135

This was the only information on the official site that has been updated:

地下から採掘されるクリーンかつ万能なエネルギー源で、人類の科学技術文明の産物を支えている.

I think this has something to do with it, if not then I am sorry if I made a mistake.