Formally titled the Special Service Squad, Section 1 is the branch of Japan's public security apparatus that handles the bulk of criminal investigations within the country, operating notionally beneath the Ministry of Home Affairs.
Its full designation is the Special Service Squad, though it is referred to more simply as Section 1. The unit's remit is domestic, confined to cases arising inside Japan rather than any international mandate.
The division takes on the majority of criminal casework across the nation, making it a workhorse of everyday law enforcement. Its authority is described as supposedly flowing from the Ministry of Home Affairs, a hedge that leaves the exact chain of command slightly uncertain.

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Public Security Section 1, formally called the Special Service Squad, is the branch of Japan's public security apparatus that handles the bulk of criminal investigations within the country.
Public Security Section 1's official designation is the Special Service Squad, though it is referred to more simply as Section 1.
Section 1's remit is domestic, confined to criminal cases arising inside Japan rather than any international mandate. It takes on the majority of criminal casework across the nation.
Section 1's authority is described as supposedly flowing from the Ministry of Home Affairs, though the exact chain of command is left slightly uncertain.
No specific personnel of Public Security Section 1 are identified in the source material, which treats the squad as an institution rather than a roster of named agents.
Looking for more on Public Security Section 1? The Dragon Ball Wiki on Fandom has a dedicated page with community notes.
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