Of course, Akimoto Masahiko thought he was doing a good deed. If he just let people go, there would probably be another homeless corpse under the bridge; putting them in detention at least meant they had food, shelter, and care, which was better than mysteriously disappearing outside.
It's not just the Nakagawara Police Station slacking off; other police stations' criminal police handle cases the same way. They turn a blind eye, detaining addicts to get rid of this batch of mad lunatics, which has drawn the attention of the Police Department's higher-ups.
As everyone knows, senior officials in the Police Department are generally removed from the front lines. Somewhere in the middle, a clever little guy emerged, compiled these fake records, claimed there was rampant drug use in Tokyo, and proposed an anti-drug operation.