Shef and Sakurako
This won't be a hidden blade, but even a sword at your hip will need sharpening, refining. The tiredness doesn't seem to hold, what does hold however is fear, intimidation. Your Requiem attacks both the body and the mind, the body with compulsion, the mind with fear, and it just so happen your foe, running on pure instincts, is while refusing to feel tired is still quite intimidated by the effect regardless.
Minato
"I have no idea then."
Minato just stares at them with an absolutely deadpan expression.
He didn't believe him for one second, but then again, maybe this was all part of the drill. Or maybe it wasn't. If it wasn't, Tsukasa was definitely going to get an earful from him later.
"....okay then. So.....I assume THAT first fight was just the warm-up."