Xia
On porpoise
Unfortunately either catching or defeating the UBs in that specific area are mandatory prerequisites in order to advance to the Battle Tree.
However, as fellow user Kanon90 already rightfully said, Type: Null can be postponed with the aforementioned little 'trick'. Wicke will go back to the Æther Paradise where you can pick it up whenever it's more convenient for you.
Cheers for the quick responses!Yeah its a lot true but the only way to go at it for Null(wait for somebody else to confirm 100% on UBs)