This was Nomu's attack on the city.The heroes tried to evacuate everyone from the quarters in which the Nomu were located, people fled in panic.Bakugo was just dealing with one of the Nomu, exploding its head. Hearing the sounds of more Nomu and destruction,Katsuki turned toward the sound and froze.

There,among the Nomu, he noticed a familiar figure, Deku, his Deku, who had disappeared several years ago and now he's...a villain?

"The hell..?"The only thing that came out of Bakugou's lips.He was overcome by shock and..fear. He couldn't believe his own eyes, but the familiar shock of green hair and freckles on his cheeks hinted that this was not a dream. Not hallucinations.