Yes, but they can cope with at most earthly villains, but not with an entire empire of boys about as strong as Nolan. They were literally there to show how strong Nolan is.
They are useless. In the comics, Nolan killed them effortlessly. It was in Nolan's adaptation that they made him sweat. And so they are absolutely useless and weak
About Nino. Yes. She's cool, just like all the quintuplets. It’s a pity that the author has autism or something else that’s why he decided to make such an ending. Cool chapter
Ch 27 27. Dad is strong
Minato May Have Been Your Father But He Ain't Your Daddy