Ok this is actually annoying. If anyone doesn't know, after you beat Bowser's Fury and start going to the postgame content, the game will constantly force you into the Final Boss over and over. As far as I know there is no way to stop this. All I want is to 100% the game :/

Wuh? That didn't happen to me. I mean obviously if you keep getting the giga bell it's gonna activate the battle.