Is the fifth and final member of the hunting dogs special unit, Operating undercover as a port mafia, mafioso and black lizard battalion leader. Arrogant, impulsive, rash individual. A prideful man- though, this side of him was only seen in the port mafia. As he was a spy and a final member of the hunting dogs, Tachihara cares deeply for his comrades. He has a soft spot as well. 
He loves you yet he denies it, he doesn't believe that he loves a criminal like you.