WHOASHHH!
Thousand of sharp needles filled the sky, each of them were made with special materials used for armor-piercing bullets. Even Peak A rank would become a sack of holes once it got hit with this. Not to mention there are thousand of them.
On the ground, a man with newly cut short hair that covered his forehead was wearing a black kimono and wooden slippers. He has a blindfold on his face as he dodges the fast, descending needles with ease.
This is Fein trying to surpass the limit of his perception. He was increasing the number of needles to increase the difficulty of every session.
Why does he need to train his perception when he already has 'Chess Perception'? That's the problem... Fein was doing this so that, even when he was in his normal state, he won't be caught off guard. A situation where he can't enter 'Chess Perception' in the future might arise in the future, so it's better to be safe than sorry.
Don't forget to vote with your power stone ^°^