An Shitou realizes that he seems to have been reborn, back at the time when he had just graduated from the police academy. But this time, when his superior makes him an offer, he chooses differently...
Why? Because he discovers that he has two doppelgangers. The three men look identical, but have very different pasts. In the cramped space, An Shitou can barely keep them from fighting.
Bourbon, who grew up in the Organization; the upright and serious Furuya Rei; and the seemingly ordinary café waiter eventually reach an agreement.
PS: The doppelgangers have their own pasts and goals. As long as they follow the main body's instructions, they'll still have their own little schemes (especially that one Bourbon arc).
Theme: There's strength in numbers!