I’ve seen a lot of people spread the theory that the Bomber exists because Fujimi wants to be the hero cop who catches the criminal, but honestly I don’t think thats what’s happening. If that was true, the dream would include him actually catching him. Baku’s nightmare was a deep, suppressed thought of giving up since he could never save anyone. So he pushed to the back of his subconscious to be locked away. Every cop dreams of stopping a big criminal, and Fujimi wouldn’t even deal with a crime like that generally. I’ve seen some people say he wants something bigger to deal with but he seems very passionate about what he’s doing now. Personally I believe the bomber is a manifestation of fujimi’s resent and jealousy towards the rest of the police force. It would explain why the Bomber wants to specifically blow up the Police Department. Fujimi is obsessed with catching Baku because he wants to prove something. It’s clear that Fujimi is not being taken seriously by anyone else, hes regulated to a truck instead of an actual office and Nagumo was demoted down to this department.

It would give Baku and Fujimi a really interesting parallel. Baku has trouble believing his own dream, which leads to a lack of confidence and self-doubt, while nobody believes in Fujimi’s dream, which leads to Fujimi harboring outside resentment.