<A cohabitation contract with a tenacious yakuza> A small-time gangster, Hayato, has taken the name “Tiger” to represent himself as a yakuza leader. “Tiger” is the codename for the yakuza leader who is in charge of the city Hayato lives in. And that man also has a tiger tattoo on his back. What will happen if he’s discovered… but Hayato does not listen to the advice of those around him. As Hayato is drinking with the money he ‘earned’ today in his favourite gay bar, a handsome man appears…?! A mysterious and obsessive yakuza member × a temperamental thug and former hacker, an ero yakuza BL begins from this strange cohabitation!