I feel really bad for Azuma... his entire life is just heartlessly revealed to be a complete and total lie. His father, mother and sister are just fabrications of his imagination and he's always been alone. Everything he's known about himself his entire life besides his friendship with Tokio and Ely is proven to be categorically false. This is a big set-up for Azuma to eventually become a villain alongside previous foreshadowing, and he can't even be blamed if he goes down that path...
Of course, Tokio is going through his own familial loss, and Ely's going down what's likely to be a dark path too. Seems to be like the trio is splintering off with their own large problems to deal with, which will cause friction down the line. Perfect ending to this arc!