"Kazuo Tanaka is a teenager burdened with responsibilities following his father's death. His life takes a mysterious turn when he receives an enigmatic phone call from his intriguing friend, Zhen. Soon after, he begins receiving frequent calls from a stranger who promises to help him achieve financial stability—but only under a peculiar condition. Kazuo faces a dilemma: should he abandon his responsibilities to pursue a life of comfort for himself and his mother, or should he continue enduring the challenges of his honorable life?"