Things About Retired Special Forces Soldiers and Gangsters

It tells the story of a retired special forces soldier who was unfairly treated by his superiors and retired angrily. A retired reconnaissance company commander who also suffered unfair treatment from his superiors and a brother who fought life and death for a long time were oppressed by the underworld organization and finally resisted and became the boss of the underworld. Are you the only one from the underworld? Don't you want to know who I am? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.