"Take a swan dive off the roof and pray for a quirk for your next life"....
Once Bakugou says those words something snapped in Izuku heads.
'Moms dead'
'I have no friends'
'I have no quirk'
'Everybody wants me dead'Might as well do it I have nothing to live for anyway....
In truth Bakugou never ACTUALLY hated Izuku it's quite the opposite. He was in love with the cute broccoli and didn't want him to be a hero so he didn't get hurt. He was doing this to protect him..... or so he thought.....