Terumi Morgan bitterly accepts that he shouldn't expect a lot from life. He just wants to meet his deadlines at work and watch his porn in peace. But then an unexpected sick day sends him on a collision course with two people who will change his world forever—a runaway kid and a thirtysomething mujina assassin. Suddenly life is expecting a lot from him.

Volume 1 of the Mujina into the Deep manga series by Inio Asano.