Shiba, a detective in the fifth anti-organized crime division of the Tokyo
Metropolitan Police, a.k.a. "Anti-Gang 5," is on the handgun-smuggling beat. A
so-called handgun confiscation specialist, the most important element of his
investigations is the information gathering skills of his undercover informant
S. Shiba's "S," Munechika, also happens to be a big-time yakuza. Though he was
aware of the special feelings he had for Munechika, Shiba chose the life of a
detective. Thinking of each other, they swear to protect their relationship as S
and detective. But, when a mysterious young man named Black appears before
Shiba, everything falls apart!
