bakugo was fighting a villain, but some weird ass quirk swapped places with him and him from another universe..this time it was him from dead deku au..where deku died in the in the sludge villain accident. Both of the bakugos are the same age and both go to Ua. The bakugos swapped places and the bakugo from dead deku au fell to the floor, leaving the other bakugo in his own universe. There were a few other heroes there too