This is a weird effect in the Brook panel.
We have no idea what Shuri's eyes are capable of.
Is is possible Shuri is actually hypnotizing Brook here, so he believes it was all a dream? And then, cuts him perfectly, so he doesn't die?
What Imu did here was use Shuri's love for her Kingdom and People combined with Reuven's lies to make Reuven the bad guy in Shuri's Domi'd mind.
However, there was no reason for Shuri to hate Brook. He had merely fought under the King's orders for their sake. This is why he was able to be spared.
OMG.





