Higumi Otoshi's limits - and no a flatball will actually not stop a higumi otoshi.

What exactly is the condition to hit a tsbumae gaeshi? Why doesn't fuji just always hit this ball?

If you have a topspin ball then the opponent actually needs to reverse the spin which takes more energy. Now lets think of a flatball - you have no spin to reverse therefore the spin you add is actually greater. If they had hit a topspin ball then it would take fuji more energy to hit his higumi otoshi.

i think it's not more about the condition, it's more about where the ball hit fuji's racket, cus to hit higuma otoshi perfectly, the ball has to be at the perfect spot of his racket..

so that's why when Ryoma countering it by aiming at the net, the ball didn't hit at Fuji's 'sweet spot' on the racket.. and the spin cause some stuff about the ball being further away than usual so that it goes out.. i think..

why doesn't fuji always hit it? the opponents probably aware of it, so they kinda avoid using smash.. or maybe.. u know.. Fuji is one of those ppl.. he gets serious when he gets in the mood.. otherwise, he doesn't care whether he wins or lose..

Oh shoot I actually meant the tsubame gaeshi - opps wrong triple counter