Unemployed Concentration Camp

A brief description of the Unemployed Concentration Camp manga: The year 2022, the working method of Japanese regeneration was established. A person who has no income for more than six months is treated where they rewrite the brain in a regeneration facility. Tatsuya Kamijo worked for a foreign investment company. One day he loses his job, but after six months Tatsuya goes to a concentration camp, not a treatment center. There he is subjected to worse treatment than brainwashing and training. Why was Tatsuya sent there unknown?