Finally started the 2.6 Story and... did I miss something?

Last I remember in terms of the protags meeting/knowing the AoD was that we met Sunna as a random Astra fan during the resort event.

Now I'm starting the 2.6 story and we just... instantly know all of them, are their best friend, are their manager apparently and also know about Aria's secret?

When did all that happen?