Why Minato needs FTG if he was the fastest by foot?

[TrollingSage]

i really want to know this

Me too. I mean plot wise it doesnt make sense. Itachi died as soon as he unveiled it. He didnt tank any attacks that his susano couldnt have handled either. He didnt even use it when he was revived as an edo. IMO Kishi should have saved it for another character.

 

[grizzlyshree]

Why does Itachi need Yata mirror if his final susano cant be broken?

when was it said that the final susanoo cannot be broken?