Kimura, once feared as the underworld's deadliest assassin, has severed ties with his syndicate for one simple reason: he just wants to live a normal life. His fresh start? An entry-level job at a customer service call center.

However, between mastering unfamiliar office tasks, trying to figure out what "normal" actually means, and fending off relentless hitmen dispatched by his former employers, his new 9-to-5 is anything but peaceful.

Can Kimura overcome this daily onslaught of workplace hazards and lethal assassins to finally carve out a place where he truly belongs?! Experience the high-octane action of the ultimate killer caught between the lethal art of assassination and customer inquiry management!