Lady Joker, Volume One By Kaoru Takamura

Tokyo, 1995. Five men meet at the racetrack every Sunday to bet on horses. They have little in common except a deep disaffection with their lives, but together they represent the social struggles and griefs of post-War Japan: a poorly socialized genius stuck working as a welder; a demoted detective with a chip on his shoulder; a Zainichi Korean banker sick of being ostracized for his race; a struggling single dad of a teenage girl with Down syndrome. The fifth man bringing them all together is an elderly drugstore owner grieving his grandson, who has died suspiciously after the revelation of a family connection with the segregated buraku community, historically subjected to severe discrimination.
Intent on revenge against a society that values corporate behemoths more than human life, the five conspirators decide to carry out a heist: kidnap the CEO of Japan’s largest beer conglomerate and extract blood money from the company’s corrupt financiers.