So I've been playing for a while and I've just finished progressing Elsa, Christa and Sasha but I cannot do the rest. It says I need to progress hange to progress all of the other ones but I don't know who knows more about titans than hange. I thought it was mikasa but I couldn't find her. People have said she's in the boys dorms but it is locked for me atm. If you could help, I'd be very thankful.