Otono no Susume follows Ota, a 48-year-old electronics store employee living a peaceful life in a contemporary Japanese city. His ordinary existence is shattered when his wife discovers drugs hidden in the bag of their 17-year-old son. This discovery pulls Ota out of his routine and thrusts him directly into the violent underworld of organized crime. The series, a violence suspense manga, chronicles his desperate transformation from an average salaryman into a father willing to confront ruthless criminals in a high-stakes rescue mission to save his son from a life of corruption and danger.

The narrative focuses on Ota, a protagonist who initially embodies a quiet, unassuming middle-aged everyman. As the story progresses, he is forced to navigate a shadowy realm of syndicates and violent encounters, relying on a newly discovered resolve to fight for his family. The central conflict pits his paternal duty against his profound lack of experience with the criminal world, creating a tense, character-driven thriller where each decision carries life-or-death consequences.

Major narrative arcs begin with the inciting incident of the drug discovery, which upends the family's domestic tranquility. This leads Ota to abandon his normal life and delve into the criminal underground, where he must learn to survive and negotiate with dangerous figures. The story follows his escalating confrontations as he tracks leads, faces physical threats, and attempts to dismantle the grip the syndicate has on his son before it is too late. The series launched in April 2024 in Grand Jump magazine before later moving to the Mecha Comic digital platform.