I have to agree that the use of Mega Flare at this point would be too much for Oner. Ultija was used like 5 minutes ago, having such devastating attacks right after each other would take a lot of damage. If it was the KH version of Mega Flare I wouldn't mind (because it has shorter range and isn't quite as powerful as the FF version). But the FF version would take too much of a person, if used right after another powerful spell. And I think that Joshua and FL also want to have a decent fight.