Ginnikan

Tsurunosuke is a boy whose father was killed in a vendetta. Wasuke, the owner of a konnyaku shop in Tenma, Osaka, takes him in and makes him an apprentice. As the boy resolves to live as a merchant, a turbulent fate sweeps in…! This is the complete manga adaptation of an early period drama masterpiece by the popular historical fiction writer Kaoru Takada!!

(Source: Akita Shoten, machine translated)

Note: Based on the novel of the same name by Kaoru Takada.