Mha react to deku as tanjiro /mha×kny/ Au in disc

IN THE FINAL WAR ARC
DEKU WAS GOING TO KILL AFO
BUT IN THE SAME SEC THAT DEKU KILLED AFO IN
AFO USED A QUIRK THAT MADE HIM TURN INTO DEMON AND BECOME THE DEMON KING Michael Jackson!
(THAT ALL FOR P1)