I woke up in a panic today realizing I forgot that ticket release was yesterday.
Quick google and the first hit was actually to reddit saying tickets were sold out after 10 mins:
https://www.reddit.com/r/Hololive/comments/1heih0c/mori_calliope_2nd_concert_grimoire_tickets_sold/I was about to give up but went to check to site anyway and was still able to buy a GA ticket just now a full 15+ hours later?
Did I get lucky?