"Breezy, now that Airy has joined us, don't you want to stay with Kron again?"
Sara has reached master level. And so, Airy doesn't have to stay with Sara anymore. Unless Sara wanted to attempt to reach the stage beyond master level.
But there are too many things that we don't know about that stage. So for now, Sara and also those who have reached master level wanted to adapt to their new power first.
Even Kron is also training. And I guess that he stopped adventuring because he is training again. And that's why Breezy is still reluctant to leave.
"I'll stay with you guys for now. Kron is training hard and I don't want to bother him. At least until he's confident that he can use his new power well, I will stay with you guys. Though I'm sure that he has gotten used to his power. But he's just training so he won't be weaker than other master level mages," Breezy said.
