The yakuza is more powerful than the Japanese government in this series, so what use would the government be? They look down on the government.It's been a while, so I don't remember the situation well, but don't the yakuza know Ojiro's a terrorist (wannabe)? Since this whole building is an Epstein situation, they can probably get the gov't to get more serious about catching Ojiro by combining the raid and his past.